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Mehrens D, Fabritius MP, Reidler P, Liebig T, Afat S, Ospel JM, Fröhlich MF, Schwarting J, Ricke J, Dimitriadis K, Goyal M, Kunz WG. Cost-effectiveness of endovascular treatment versus best medical management in basilar artery occlusion stroke: A U.S. healthcare perspective. Eur Stroke J 2024; 9:97-104. [PMID: 37905959 PMCID: PMC10916810 DOI: 10.1177/23969873231209616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/08/2023] [Indexed: 11/02/2023] Open
Abstract
INTRODUCTION Two recent studies showed clinical benefit for endovascular treatment (EVT) in basilar artery occlusion (BAO) stroke up to 12 h (ATTENTION) and between 6 and 24 h from onset (BAOCHE). Our aim was to investigate the cost-effectiveness of EVT from a U.S. healthcare perspective. MATERIALS AND METHODS Clinical input data were available for both trials, which were analyzed separately. A decision model was built consisting of a short-run model to analyze costs and functional outcomes within 90 days after the index stroke and a long-run Markov state transition model (cycle length of 12 months) to estimate expected lifetime costs and outcomes from a healthcare and a societal perspective. Incremental cost-effectiveness ratios (ICER) were calculated, deterministic (DSA) and probabilistic (PSA) sensitivity analyses were performed. RESULTS EVT in addition to best medical management (BMM) resulted in additional lifetime costs of $32,063 in the ATTENTION trial and lifetime cost savings of $7690 in the BAOCHE trial (societal perspective). From a healthcare perspective, EVT led to incremental costs and effectiveness of $37,389 and 2.0 QALYs (ATTENTION) as well as $3516 and 1.9 QALYs (BAOCHE), compared to BMM alone. The ICER values were $-4052/QALY (BAOCHE) and $15,867/QALY (ATTENTION) from a societal perspective. In each trial, PSA showed EVT to be cost-effective in most calculations (99.9%) for a willingness-to-pay threshold of $100,000/QALY. Cost of EVT and age at stroke represented the greatest impact on the ICER. DISCUSSION From an economic standpoint with a lifetime horizon, EVT in addition to BMM is estimated to be highly effective and cost-effective in BAO stroke.
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Affiliation(s)
- Dirk Mehrens
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | | | - Paul Reidler
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Thomas Liebig
- Institute of Neuroradiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Saif Afat
- Department of Radiology, University of Tübingen, Tübingen, Germany
| | - Johanna M Ospel
- Departments of Radiology and Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
- Department of Radiology, University Hospital of Basel, Basel, Switzerland
| | - Matthias F Fröhlich
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Heidelberg University, Mannheim, Germany
| | - Julian Schwarting
- Department of Diagnostic and Interventional Neuroradiology, Technical University Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Konstantinos Dimitriadis
- Institute for Stroke and Dementia Research, LMU University Hospital, LMU Munich, Munich, Germany
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Mayank Goyal
- Departments of Radiology and Clinical Neurosciences, University of Calgary, Calgary, AB, Canada
| | - Wolfgang G Kunz
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
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Schmidt VF, Öcal O, Walther V, Fabritius MP, Dietrich O, Kazmierczak PM, Weiss L, Deniz S, Ümütlü MR, Puhr-Westerheide D, Wildgruber M, Ricke J, Seidensticker M. Clinical benefits of MRI-guided freehand biopsy of small focal liver lesions in comparison to CT guidance. Eur Radiol 2024:10.1007/s00330-024-10623-9. [PMID: 38319427 DOI: 10.1007/s00330-024-10623-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/02/2024] [Accepted: 01/14/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVES To compare clinical success, procedure time, and complication rates between MRI-guided and CT-guided real-time biopsies of small focal liver lesions (FLL) < 20 mm. METHODS A comparison of a prospectively collected MRI-guided cohort (n = 30) to a retrospectively collected CT-guided cohort (n = 147) was performed, in which patients underwent real-time biopsies of small FLL < 20 mm in a freehand technique. In both groups, clinical and periprocedural data, including clinical success, procedure time, and complication rates (classified according to CIRSE guidelines), were analyzed. Wilcoxon rank sum test, Pearson's chi-squared test, and Fisher's exact test were used for statistical analysis. Additionally, propensity score matching (PSM) was performed using the following criteria for direct matching: age, gender, presence of liver cirrhosis, liver lobe, lesion diameter, and skin-to-target distance. RESULTS The median FLL diameter in the MRI-guided cohort was significantly smaller compared to CT guidance (p < 0.001; 11.0 mm vs. 16.3 mm), while the skin-to-target distance was significantly longer (p < 0.001; 90.0 mm vs. 74.0 mm). MRI-guided procedures revealed significantly higher clinical success compared to CT guidance (p = 0.021; 97% vs. 79%) as well as lower complication rates (p = 0.047; 0% vs. 13%). Total procedure time was significantly longer in the MRI-guided cohort (p < 0.001; 38 min vs. 28 min). After PSM (n = 24/n = 38), MRI-guided procedures still revealed significantly higher clinical success compared to CT guidance (p = 0.039; 96% vs. 74%). CONCLUSION Despite the longer procedure time, freehand biopsy of small FLL < 20 mm under MR guidance can be considered superior to CT guidance because of its high clinical success and low complication rates. CLINICAL RELEVANCE STATEMENT Biopsy of small liver lesions is challenging due to the size and conspicuity of the lesions on native images. MRI offers higher soft tissue contrast, which translates into a higher success of obtaining enough tissue material with MRI compared to CT-guided biopsies. KEY POINTS • Image-guided biopsy of small focal liver lesions (FLL) is challenging due to inadequate visualization, leading to sampling errors and false-negative biopsies. • MRI-guided real-time biopsy of FLL < 20 mm revealed significantly higher clinical success (p = 0.021; 97% vs. 79%) and lower complication rates (p = 0.047; 0% vs. 13%) compared to CT guidance. • Although the procedure time is longer, MRI-guided biopsy can be considered superior for small FLL < 20 mm.
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Affiliation(s)
- Vanessa F Schmidt
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany.
| | - Osman Öcal
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Viktoria Walther
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Olaf Dietrich
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Lena Weiss
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
| | - Sinan Deniz
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Muzzafer R Ümütlü
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Moritz Wildgruber
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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3
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Grawe F, Blom F, Winkelmann M, Burgard C, Schmid-Tannwald C, Unterrainer LM, Sheikh GT, Pfitzinger PL, Kazmierczak P, Cyran CC, Ricke J, Stief CG, Bartenstein P, Ruebenthaler J, Fabritius MP, Geyer T. Reliability and practicability of PSMA-RADS 1.0 for structured reporting of PSMA-PET/CT scans in prostate cancer patients. Eur Radiol 2024; 34:1157-1166. [PMID: 37624414 PMCID: PMC10853294 DOI: 10.1007/s00330-023-10083-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/03/2023] [Accepted: 07/12/2023] [Indexed: 08/26/2023]
Abstract
OBJECTIVES As structured reporting is increasingly used in the evaluation of prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA-PET/CT) for prostate cancer, there is a need to assess the reliability of these frameworks. This study aimed to evaluate the intra- and interreader agreement among readers with varying levels of experience using PSMA-RADS 1.0 for interpreting PSMA-PET/CT scans, even when blinded to clinical data, and therefore to determine the feasibility of implementing this reporting system in clinical practice. METHODS PSMA-PET/CT scans of 103 patients were independently evaluated by 4 readers with different levels of experience according to the reporting and data system (RADS) for PSMA-PET/CT imaging PSMA-RADS 1.0 at 2 time points within 6 weeks. For each scan, a maximum of five target lesions were freely chosen and stratified according to PSMA-RADS 1.0. Overall scan score and compartment-based scores were assessed. Intra- and interreader agreement was determined using the intraclass correlation coefficient (ICC). RESULTS PSMA-RADS 1.0 demonstrated excellent interreader agreement for both overall scan scores (ICC ≥ 0.91) and compartment-based scores (ICC ≥ 0.93) across all four readers. The framework showed excellent intrareader agreement for overall scan scores (ICC ≥ 0.86) and compartment-based scores (ICC ≥ 0.95), even among readers with varying levels of experience. CONCLUSIONS PSMA-RADS 1.0 is a reliable method for assessing PSMA-PET/CT with strong consistency and agreement among readers. It shows great potential for establishing a standard approach to diagnosing and planning treatment for prostate cancer patients, and can be used confidently even by readers with less experience. CLINICAL RELEVANCE STATEMENT This study underlines that PSMA-RADS 1.0 is a valuable and highly reliable scoring system for PSMA-PET/CT scans of prostate cancer patients and can be used confidently by radiologists with different levels of experience in routine clinical practice. KEY POINTS PSMA-RADS version 1.0 is a scoring system for PSMA-PET/CT scans. Its reproducibility needs to be analyzed in order to make it applicable to clinical practice. Excellent interreader and intrareader agreement for overall scan scores and compartment-based scores using PSMA-RADS 1.0 were seen in readers with varying levels of experience. PSMA-RADS 1.0 is a reliable tool for accurately diagnosing and planning treatment for prostate cancer patients, and can be used confidently in clinical routine.
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Affiliation(s)
- Freba Grawe
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Franziska Blom
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Michael Winkelmann
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Caroline Burgard
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Department of Nuclear Medicine, Saarland University Hospital, Kirrberger Str., Geb. 50, 66421, Homburg, Germany
| | - Christine Schmid-Tannwald
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lena M Unterrainer
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Gabriel T Sheikh
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Paulo L Pfitzinger
- Department of Nuclear Medicine, Saarland University Hospital, Kirrberger Str., Geb. 50, 66421, Homburg, Germany
| | - Philipp Kazmierczak
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Christian G Stief
- Department of Urology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Johannes Ruebenthaler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Thomas Geyer
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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Koch DT, Horné F, Fabritius MP, Werner J, Ilmer M. Hepatocellular Carcinoma: The Role of Surgery in Liver Cirrhosis. Visc Med 2024; 40:20-29. [PMID: 38312365 PMCID: PMC10836947 DOI: 10.1159/000535782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 12/11/2023] [Indexed: 02/06/2024] Open
Abstract
Background Liver surgery is an essential component of hepatocellular carcinoma (HCC) treatment. Advances in surgical techniques and perioperative care have improved outcomes and have helped to expand surgical indications. However, liver fibrosis and cirrhosis still remain major problems for liver surgery due to the relevant impact on liver regeneration of the future liver remnant (FLR) after surgery. Especially in patients with clinically significant portal hypertension due to liver cirrhosis, surgery is limited. Despite recent efforts in developing predictive models, estimating the postoperative hepatic function remains difficult. Summary In this review, we focus on the role of surgery in the treatment of HCC in structurally altered livers. The importance of assessing FLR with techniques such as contrast-enhanced CT, e.g., with the help of artificial intelligence is highlighted. Moreover, strategies for increasing the FLR with approaches like portal vein embolization and liver vein deprivation prior to surgery are discussed. Patient selection, minimally invasive liver surgery including robotic techniques, and perioperative concepts like the Enhanced Recovery After Surgery (ERAS) guidelines are identified as crucial parts of avoiding posthepatectomy liver failure. Key Message The need for ongoing research to optimize patient selection criteria and perioperative care and to develop innovative biomarkers for outcome prediction is emphasized.
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Affiliation(s)
- Dominik T. Koch
- Department of General, Visceral and Transplantation Surgery, LMU University Hospital, LMU, Munich, Germany
| | - Fabian Horné
- Department of General, Visceral and Transplantation Surgery, LMU University Hospital, LMU, Munich, Germany
| | | | - Jens Werner
- Department of General, Visceral and Transplantation Surgery, LMU University Hospital, LMU, Munich, Germany
| | - Matthias Ilmer
- Department of General, Visceral and Transplantation Surgery, LMU University Hospital, LMU, Munich, Germany
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Fabritius MP, Garlipp B, Öcal O, Puhr-Westerheide D, Amthauer H, Geyer T, Holzgreve A, Ricke J, Kupitz D, Grosser OS, Omari J, Pech M, Seidensticker M, Grawe F, Seidensticker R. Assessing regional hepatic function changes after hypertrophy induction by radioembolisation: comparison of gadoxetic acid-enhanced MRI and 99mTc-mebrofenin hepatobiliary scintigraphy. Eur Radiol Exp 2024; 8:15. [PMID: 38282160 PMCID: PMC10822831 DOI: 10.1186/s41747-023-00409-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 10/31/2023] [Indexed: 01/30/2024] Open
Abstract
BACKGROUND To compare Gd-ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and 99mTc-labelled mebrofenin hepatobiliary scintigraphy (HBS) as imaging-based liver function tests after unilateral radioembolisation (RE) in patients with primary or secondary liver malignancies. METHODS Twenty-three patients with primary or secondary liver malignancies who underwent Gd-EOB-DTPA-enhanced MRI within a prospective study (REVoluTion) were evaluated. REVoluTion was a prospective open-label, non-randomised, therapy-optimising study of patients undergoing right-sided or sequential RE for contralateral liver hypertrophy at a single centre in Germany. MRI and hepatobiliary scintigraphy were performed before RE (baseline) and 6 weeks after (follow-up). This exploratory subanalysis compared liver enhancement on hepatobiliary phase MRI normalised to the spleen (liver-to-spleen ratio (LSR)) and the muscle (liver-to-muscle ratio (LMR)) with mebrofenin uptake on HBS for the total liver (TL) and separately for the right (RLL) and left liver lobe (LLL). RESULTS Mebrofenin uptake at baseline and follow-up each correlated significantly with LSR and LMR on MRI for TL (≤ 0.013) and RLL (≤ 0.049). Regarding the LLL, mebrofenin uptake correlated significantly with LMR (baseline, p = 0.013; follow-up, p = 0.004), whereas with LSR, a borderline significant correlation was only seen at follow-up (p = 0.051; p = 0.046). CONCLUSION LSRs and LMR correlate with mebrofenin uptake in HBS. This study indicates that Gd-EOB-DTPA-enhanced MRI and 99mTc-labelled mebrofenin HBS may equally be used to assess an increase in contralateral liver lobe function after right-sided RE. RELEVANCE STATEMENT MRI may be a convenient and reliable method for assessing the future liver remnant facilitating treatment planning and monitoring of patients after RE-induced hypertrophy induction. KEY POINTS • Both MRI and HBS can assess liver function after RE. • Liver enhancement on MRI correlates with mebrofenin uptake on HBS. • MRI might be a convenient alternative for estimating future liver remnants after hypertrophy induction.
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Affiliation(s)
| | - Benjamin Garlipp
- General Surgery, Otto Von Guericke University, Magdeburg, Germany
| | - Osman Öcal
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | | | - Holger Amthauer
- Department of Nuclear Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Thomas Geyer
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Adrien Holzgreve
- Department of Nuclear Medicine, LMU University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Dennis Kupitz
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-Von-Guericke University, Magdeburg, Germany
| | - Oliver S Grosser
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-Von-Guericke University, Magdeburg, Germany
- Research Campus STIMULATE, Otto-Von-Guericke University, Magdeburg, Germany
| | - Jazan Omari
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-Von-Guericke University, Magdeburg, Germany
| | - Maciej Pech
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg and Medical Faculty of Otto-Von-Guericke University, Magdeburg, Germany
| | - Max Seidensticker
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Freba Grawe
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany.
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Feuerecker B, Heimer MM, Geyer T, Fabritius MP, Gu S, Schachtner B, Beyer L, Ricke J, Gatidis S, Ingrisch M, Cyran CC. Artificial Intelligence in Oncological Hybrid Imaging. Nuklearmedizin 2023; 62:296-305. [PMID: 37802057 DOI: 10.1055/a-2157-6810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2023]
Abstract
BACKGROUND Artificial intelligence (AI) applications have become increasingly relevant across a broad spectrum of settings in medical imaging. Due to the large amount of imaging data that is generated in oncological hybrid imaging, AI applications are desirable for lesion detection and characterization in primary staging, therapy monitoring, and recurrence detection. Given the rapid developments in machine learning (ML) and deep learning (DL) methods, the role of AI will have significant impact on the imaging workflow and will eventually improve clinical decision making and outcomes. METHODS AND RESULTS The first part of this narrative review discusses current research with an introduction to artificial intelligence in oncological hybrid imaging and key concepts in data science. The second part reviews relevant examples with a focus on applications in oncology as well as discussion of challenges and current limitations. CONCLUSION AI applications have the potential to leverage the diagnostic data stream with high efficiency and depth to facilitate automated lesion detection, characterization, and therapy monitoring to ultimately improve quality and efficiency throughout the medical imaging workflow. The goal is to generate reproducible, structured, quantitative diagnostic data for evidence-based therapy guidance in oncology. However, significant challenges remain regarding application development, benchmarking, and clinical implementation. KEY POINTS · Hybrid imaging generates a large amount of multimodality medical imaging data with high complexity and depth.. · Advanced tools are required to enable fast and cost-efficient processing along the whole radiology value chain.. · AI applications promise to facilitate the assessment of oncological disease in hybrid imaging with high quality and efficiency for lesion detection, characterization, and response assessment. The goal is to generate reproducible, structured, quantitative diagnostic data for evidence-based oncological therapy guidance.. · Selected applications in three oncological entities (lung, prostate, and neuroendocrine tumors) demonstrate how AI algorithms may impact imaging-based tasks in hybrid imaging and potentially guide clinical decision making..
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Affiliation(s)
- Benedikt Feuerecker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
- German Cancer Research Center (DKFZ), Partner site Munich, DKTK German Cancer Consortium, Munich, Germany
| | - Maurice M Heimer
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Thomas Geyer
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Sijing Gu
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Leonie Beyer
- Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Sergios Gatidis
- Department of Radiology, University Hospital Tübingen, Tübingen, Germany
- MPI, Max Planck Institute for Intelligent Systems, Tübingen, Germany
| | - Michael Ingrisch
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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7
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Fabritius MP, Soltani V, Cyran CC, Ricke J, Bartenstein P, Auernhammer CJ, Spitzweg C, Schnitzer ML, Ebner R, Mansournia S, Hinterberger A, Lohse A, Sheikh GT, Winkelmann M, Knösel T, Ingenerf M, Schmid-Tannwald C, Kunz WG, Rübenthaler J, Grawe F. Diagnostic accuracy of SSR-PET/CT compared to histopathology in the identification of liver metastases from well-differentiated neuroendocrine tumors. Cancer Imaging 2023; 23:92. [PMID: 37770958 PMCID: PMC10537814 DOI: 10.1186/s40644-023-00614-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 09/19/2023] [Indexed: 09/30/2023] Open
Abstract
BACKGROUND Histopathology is the reference standard for diagnosing liver metastases of neuroendocrine tumors (NETs). Somatostatin receptor-positron emission tomography / computed tomography (SSR-PET/CT) has emerged as a promising non-invasive imaging modality for staging NETs. We aimed to assess the diagnostic accuracy of SSR-PET/CT in the identification of liver metastases in patients with proven NETs compared to histopathology. METHODS Histopathologic reports of 139 resected or biopsied liver lesions of patients with known NET were correlated with matching SSR-PET/CTs and the positive/negative predictive value (PPV/NPV), sensitivity, specificity, and diagnostic accuracy of SSR-PET/CT were evaluated. PET/CT reading was performed by one expert reader blinded to histopathology and clinical data. RESULTS 133 of 139 (95.7%) liver lesions showed malignant SSR-uptake in PET/CT while initial histopathology reported on 'liver metastases of NET´ in 127 (91.4%) cases, giving a PPV of 91.0%. Re-biopsy of the initially histopathologically negative lesions (reference standard) nevertheless diagnosed 'liver metastases of NET' in 6 cases, improving the PPV of PET/CT to 95.5%. Reasons for initial false-negative histopathology were inadequate sampling in the sense of non-target biopsies. The 6 (4.3%) SSR-negative lesions were all G2 NETs with a Ki-67 between 2-15%. CONCLUSION SSR-PET/CT is a highly accurate imaging modality for the diagnosis of liver metastases in patients with proven NETs. However, we found that due to the well-known tumor heterogeneity of NETs, specifically in G2 NETs approximately 4-5% are SSR-negative and may require additional imaging with [18F]FDG PET/CT.
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Affiliation(s)
- M P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - V Soltani
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - C C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - J Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - P Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - C J Auernhammer
- Department of Internal Medicine 4, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - C Spitzweg
- Department of Internal Medicine 4, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - M L Schnitzer
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - R Ebner
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - S Mansournia
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - A Hinterberger
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - A Lohse
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - G T Sheikh
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - M Winkelmann
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - T Knösel
- Department of Pathology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - M Ingenerf
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - C Schmid-Tannwald
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - W G Kunz
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - J Rübenthaler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Freba Grawe
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany.
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8
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Primke TF, Ingelfinger R, Elewa MAF, Macinkovic I, Weigert A, Fabritius MP, Reichel CA, Ullrich A, Kazmaier U, Burgers LD, Fürst R. The Microtubule-Targeting Agent Pretubulysin Impairs the Inflammatory Response in Endothelial Cells by a JNK-Dependent Deregulation of the Histone Acetyltransferase Brd4. Cells 2023; 12:2112. [PMID: 37626922 PMCID: PMC10453553 DOI: 10.3390/cells12162112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/12/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
The anti-inflammatory effects of depolymerizing microtubule-targeting agents on leukocytes are known for a long time, but the potential involvement of the vascular endothelium and the underlying mechanistic basis is still largely unclear. Using the recently synthesized depolymerizing microtubule-targeting agent pretubulysin, we investigated the anti-inflammatory potential of pretubulysin and other microtubule-targeting agents with respect to the TNF-induced leukocyte adhesion cascade in endothelial cells, to improve our understanding of the underlying biomolecular background. We found that treatment with pretubulysin reduces inflammation in vivo and in vitro via inhibition of the TNF-induced adhesion of leukocytes to the vascular endothelium by down-regulation of the pro-inflammatory cell adhesion molecules ICAM-1 and VCAM-1 in a JNK-dependent manner. The underlying mechanism includes JNK-induced deregulation and degradation of the histone acetyltransferase Bromodomain-containing protein 4. This study shows that depolymerizing microtubule-targeting agents, in addition to their established effects on leukocytes, also significantly decrease the inflammatory activation of vascular endothelial cells. These effects are not based on altered pro-inflammatory signaling cascades, but require deregulation of the capability of cells to enter constructive transcription for some genes, setting a baseline for further research on the prominent anti-inflammatory effects of depolymerizing microtubule-targeting agents.
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Affiliation(s)
- Tobias F. Primke
- Institute of Pharmaceutical Biology, Goethe University Frankfurt, 60438 Frankfurt, Germany; (T.F.P.); (R.I.); (L.D.B.)
- LOEWE Center for Translational Biodiversity Genomics (LOEWE-TBG), Goethe University Frankfurt, 60596 Frankfurt, Germany
| | - Rebecca Ingelfinger
- Institute of Pharmaceutical Biology, Goethe University Frankfurt, 60438 Frankfurt, Germany; (T.F.P.); (R.I.); (L.D.B.)
- LOEWE Center for Translational Biodiversity Genomics (LOEWE-TBG), Goethe University Frankfurt, 60596 Frankfurt, Germany
| | - Mohammed A. F. Elewa
- Institute of Biochemistry I, Faculty of Medicine, Goethe University Frankfurt, 60596 Frankfurt, Germany; (M.A.F.E.); (I.M.); (A.W.)
- Biochemistry Department, Faculty of Pharmacy, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Igor Macinkovic
- Institute of Biochemistry I, Faculty of Medicine, Goethe University Frankfurt, 60596 Frankfurt, Germany; (M.A.F.E.); (I.M.); (A.W.)
| | - Andreas Weigert
- Institute of Biochemistry I, Faculty of Medicine, Goethe University Frankfurt, 60596 Frankfurt, Germany; (M.A.F.E.); (I.M.); (A.W.)
| | - Matthias P. Fabritius
- Department of Otorhinolaryngology, Walter Brendel Centre of Experimental Medicine, University Hospital, 81377 Munich, Germany; (M.P.F.); (C.A.R.)
- Department of Radiology, University Hospital, University of Munich, 81377 Munich, Germany
| | - Christoph A. Reichel
- Department of Otorhinolaryngology, Walter Brendel Centre of Experimental Medicine, University Hospital, 81377 Munich, Germany; (M.P.F.); (C.A.R.)
| | - Angelika Ullrich
- Institute of Organic Chemistry, Saarland University, 66123 Saarbrücken, Germany; (A.U.); (U.K.)
| | - Uli Kazmaier
- Institute of Organic Chemistry, Saarland University, 66123 Saarbrücken, Germany; (A.U.); (U.K.)
| | - Luisa D. Burgers
- Institute of Pharmaceutical Biology, Goethe University Frankfurt, 60438 Frankfurt, Germany; (T.F.P.); (R.I.); (L.D.B.)
| | - Robert Fürst
- Institute of Pharmaceutical Biology, Goethe University Frankfurt, 60438 Frankfurt, Germany; (T.F.P.); (R.I.); (L.D.B.)
- LOEWE Center for Translational Biodiversity Genomics (LOEWE-TBG), Goethe University Frankfurt, 60596 Frankfurt, Germany
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9
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Mansour N, Rangan K, Tiling R, Rübenthaler J, Fabritius MP. 68Ga-DOTATOC PET/CT in Pancreatic Metastasis From Clear Cell Renal Cell Carcinoma. Clin Nucl Med 2023; Publish Ahead of Print:00003072-990000000-00594. [PMID: 37276508 DOI: 10.1097/rlu.0000000000004730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
ABSTRACT We present a rare case of a 74-year-old woman who underwent 68Ga-DOTATOC PET/CT imaging for a suspected neuroendocrine tumor (NET) in the pancreatic head. PET/CT showed a solitary high somatostatis receptor (SSTR)-expressing lesion in the pancreatic head. Fine-needle aspiration of this lesion revealed a metastasis from a clear cell renal cell carcinoma (ccRCC). The patient had undergone nephrectomy 16 years prior due to ccRCC of the right kidney. Our case demonstrates that metastases originating from RCC can have high SSTR expression and therefore might mimic well-differentiated neuroendocrine tumors in 68Ga-DOTATOC PET/CT.
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Affiliation(s)
- Nabeel Mansour
- From the Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Reinhold Tiling
- Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Johannes Rübenthaler
- From the Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Matthias P Fabritius
- From the Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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10
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Grawe F, Rosenberger N, Ingenerf M, Beyer L, Eschbach R, Todica A, Seidensticker R, Schmid-Tannwald C, Cyran CC, Ricke J, Bartenstein P, Auernhammer CJ, Ruebenthaler J, Fabritius MP. Diagnostic performance of PET/CT in the detection of liver metastases in well-differentiated NETs. Cancer Imaging 2023; 23:41. [PMID: 37098632 PMCID: PMC10131442 DOI: 10.1186/s40644-023-00556-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 04/13/2023] [Indexed: 04/27/2023] Open
Abstract
BACKGROUND The aim of this retrospective study was to compare the diagnostic accuracy of somatostatin receptor (SSR)-PET/CT to liver MRI as reference standard in the evaluation of hepatic involvement in neuroendocrine tumors (NET). METHODS An institutional database was screened for "SSR" imaging studies between 2006 and 2021. 1000 NET Patients (grade 1/2) with 2383 SSR-PET/CT studies and matching liver MRI in an interval of +3 months were identified. Medical reports of SSR-PET/CT and MRI were retrospectively evaluated regarding hepatic involvement and either confirmed by both or observed in MRI but not in SSR-PET/CT (false-negative) or in SSR-PET but not in MRI (false-positive). RESULTS Metastatic hepatic involvement was reported in 1650 (69.2%) of the total 2383 SSR-PET/CT imaging studies, whereas MRI detected hepatic involvement in 1685 (70.7%) cases. There were 51 (2.1%) false-negative and 16 (0.7%) false-positive cases. In case of discrepant reports, MRI and PET/CT were reviewed side by side for consensus reading. SSR-PET/CT demonstrated a sensitivity of 97.0% (95%CI: 96.0%, 97.7%), a specificity of 97.7% (95%CI: 96.3%, 98.7%), a PPV of 99.0% (95%CI: 98.4%, 99.4%) and NPV of 93.0% (95%CI: 91.0, 94.8%) in identifying hepatic involvement. The most frequent reason for false-negative results was the small size of lesions with the majority < 0.6 cm. CONCLUSION This study confirms the high diagnostic accuracy of SSR-PET/CT in the detection of hepatic involvement in NET patients based on a patient-based analysis of metastatic hepatic involvement with a high sensitivity and specificity using liver MRI imaging as reference standard. However, one should be aware of possible pitfalls when a single imaging method is used in evaluating neuroendocrine liver metastases in patients.
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Affiliation(s)
- Freba Grawe
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Natalie Rosenberger
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Maria Ingenerf
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Leonie Beyer
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Ralf Eschbach
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Andrei Todica
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Ricarda Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Christine Schmid-Tannwald
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Christoph J Auernhammer
- Department of Internal Medicine 4, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Johannes Ruebenthaler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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11
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Gold L, Moser C, Fabritius MP, Seidensticker M, Ricke J, Albertsmeier M, Angele MK, Knösel T, Di Gioia D, Lindner LH, Armbruster M, Kunz WG. Diagnostic accuracy of biopsy after neoadjuvant treatment for well-differentiated and dedifferentiated retroperitoneal liposarcoma. Surg Oncol 2023; 48:101945. [PMID: 37099895 DOI: 10.1016/j.suronc.2023.101945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 04/12/2023] [Accepted: 04/18/2023] [Indexed: 04/28/2023]
Abstract
PURPOSE Accurate histopathological grading of percutaneous biopsies is essential to guide adequate management of patients with suspected retroperitoneal liposarcoma. In this regard, however, limited reliability has been described. Therefore, we conducted a retrospective study to assess the diagnostic accuracy in retroperitoneal soft tissue sarcomas and simultaneously investigate its impact on patients' survival. MATERIALS AND METHODS Reports of an interdisciplinary sarcoma tumor board between 2012 and 2022 were systematically screened for patients with well-differentiated (WDLPS) and dedifferentiated retroperitoneal liposarcoma (DDLPS). Histopathological grading on pre-operative biopsy was correlated with corresponding postoperative histology. Additionally, patients' survival outcomes were examined. All analyses were performed in two subgroups: patients with primary surgery and patients with neoadjuvant treatment. RESULTS A total of 82 patients met our inclusion criteria. Diagnostic accuracy of patients who underwent upfront resection (n = 32) was significantly inferior to patients with neoadjuvant treatment (n = 50) (66% versus 97% for WDLPS, p < 0.001; 59% versus 97% for DDLPS, p < 0.001). For patients with primary surgery, histopathological grading on biopsy and surgery was concordant in only 47% of cases. Sensitivity for detecting WDLPS was higher than for DDLPS (70% versus 41%). Higher histopathological grading in surgical specimens correlated with worse survival outcomes (p = 0.01). CONCLUSION Histopathological grading of RPS may no longer be reliable after neoadjuvant treatment. The true accuracy of the percutaneous biopsy may need to be studied in patients who do not receive neoadjuvant treatment. Future biopsy strategies should aim to improve identification of DDLPS to inform patient management.
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Affiliation(s)
- Lukas Gold
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Christian Moser
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Martin K Angele
- Department of Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Thomas Knösel
- Department of Pathology, University Hospital, LMU Munich, Munich, Germany
| | - Dorit Di Gioia
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
| | - Lars H Lindner
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
| | - Marco Armbruster
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Wolfgang G Kunz
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany.
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12
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Grawe F, Ebner R, Geyer T, Beyer L, Winkelmann M, Sheikh GT, Eschbach R, Schmid-Tannwald C, Cyran CC, Ricke J, Bartenstein P, Heimer MM, Faggioni L, Spitzweg C, Fabritius MP, Auernhammer CJ, Ruebenthaler J. Validation of the SSTR-RADS 1.0 for the structured interpretation of SSTR-PET/CT and treatment planning in neuroendocrine tumor (NET) patients. Eur Radiol 2023; 33:3416-3424. [PMID: 36964768 PMCID: PMC10121493 DOI: 10.1007/s00330-023-09518-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 01/16/2023] [Accepted: 02/06/2023] [Indexed: 03/26/2023]
Abstract
OBJECTIVES The recently proposed standardized reporting and data system for somatostatin receptor (SSTR)-targeted PET/CT SSTR-RADS 1.0 showed promising first results in the assessment of diagnosis and treatment planning with peptide receptor radionuclide therapy (PRRT) in neuroendocrine tumors (NET). This study aimed to determine the intra- and interreader agreement of SSTR-RADS 1.0. METHODS SSTR-PET/CT scans of 100 patients were independently evaluated by 4 readers with different levels of expertise according to the SSTR-RADS 1.0 criteria at 2 time points within 6 weeks. For each scan, a maximum of five target lesions were freely chosen by each reader (not more than three lesions per organ) and stratified according to the SSTR-RADS 1.0 criteria. Overall scan score and binary decision on PRRT were assessed. Intra- and interreader agreement was determined using the intraclass correlation coefficient (ICC). RESULTS Interreader agreement using SSTR-RADS 1.0 for identical target lesions (ICC ≥ 0.91) and overall scan score (ICC ≥ 0.93) was excellent. The decision to state "functional imaging fulfills requirements for PRRT and qualifies patient as potential candidate for PRRT" also demonstrated excellent agreement among all readers (ICC ≥ 0.86). Intrareader agreement was excellent even among different experience levels when comparing target lesion-based scores (ICC ≥ 0.98), overall scan score (ICC ≥ 0.93), and decision for PRRT (ICC ≥ 0.88). CONCLUSION SSTR-RADS 1.0 represents a highly reproducible and accurate system for stratifying SSTR-targeted PET/CT scans with high intra- and interreader agreement. The system is a promising approach to standardize the diagnosis and treatment planning in NET patients. KEY POINTS • SSTR-RADS 1.0 offers high reproducibility and accuracy. • SSTR-RADS 1.0 is a promising method to standardize diagnosis and treatment planning for patients with NET.
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Affiliation(s)
- Freba Grawe
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany.
| | - Ricarda Ebner
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Thomas Geyer
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Leonie Beyer
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS Certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Michael Winkelmann
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Gabriel T Sheikh
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Ralf Eschbach
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Christine Schmid-Tannwald
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS Certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS Certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS Certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Maurice M Heimer
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lorenzo Faggioni
- Department of Translational Research, Academic Radiology, University of Pisa, Via Roma, 67, 56126, Pisa, Italy
| | - Christine Spitzweg
- Department of Internal Medicine 4, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS Certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Christoph J Auernhammer
- Department of Internal Medicine 4, University Hospital, LMU Munich, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS Certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
| | - Johannes Ruebenthaler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Interdisciplinary Center of Neuroendocrine Tumors of the GastroEnteroPancreatic System (GEPNET-KUM, ENETS Certified Center of Excellence), University Hospital, LMU Munich, 81377, Munich, Germany
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13
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Feuerecker B, Heimer MM, Geyer T, Fabritius MP, Gu S, Schachtner B, Beyer L, Ricke J, Gatidis S, Ingrisch M, Cyran CC. Artificial Intelligence in Oncological Hybrid Imaging. ROFO-FORTSCHR RONTG 2023; 195:105-114. [PMID: 36170852 DOI: 10.1055/a-1909-7013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Artificial intelligence (AI) applications have become increasingly relevant across a broad spectrum of settings in medical imaging. Due to the large amount of imaging data that is generated in oncological hybrid imaging, AI applications are desirable for lesion detection and characterization in primary staging, therapy monitoring, and recurrence detection. Given the rapid developments in machine learning (ML) and deep learning (DL) methods, the role of AI will have significant impact on the imaging workflow and will eventually improve clinical decision making and outcomes. METHODS AND RESULTS The first part of this narrative review discusses current research with an introduction to artificial intelligence in oncological hybrid imaging and key concepts in data science. The second part reviews relevant examples with a focus on applications in oncology as well as discussion of challenges and current limitations. CONCLUSION AI applications have the potential to leverage the diagnostic data stream with high efficiency and depth to facilitate automated lesion detection, characterization, and therapy monitoring to ultimately improve quality and efficiency throughout the medical imaging workflow. The goal is to generate reproducible, structured, quantitative diagnostic data for evidence-based therapy guidance in oncology. However, significant challenges remain regarding application development, benchmarking, and clinical implementation. KEY POINTS · Hybrid imaging generates a large amount of multimodality medical imaging data with high complexity and depth.. · Advanced tools are required to enable fast and cost-efficient processing along the whole radiology value chain.. · AI applications promise to facilitate the assessment of oncological disease in hybrid imaging with high quality and efficiency for lesion detection, characterization, and response assessment. The goal is to generate reproducible, structured, quantitative diagnostic data for evidence-based oncological therapy guidance.. · Selected applications in three oncological entities (lung, prostate, and neuroendocrine tumors) demonstrate how AI algorithms may impact imaging-based tasks in hybrid imaging and potentially guide clinical decision making.. CITATION FORMAT · Feuerecker B, Heimer M, Geyer T et al. Artificial Intelligence in Oncological Hybrid Imaging. Fortschr Röntgenstr 2023; 195: 105 - 114.
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Affiliation(s)
- Benedikt Feuerecker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany.,German Cancer Research Center (DKFZ), Partner site Munich, DKTK German Cancer Consortium, Munich, Germany
| | - Maurice M Heimer
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Thomas Geyer
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Sijing Gu
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Leonie Beyer
- Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Sergios Gatidis
- Department of Radiology, University Hospital Tübingen, Tübingen, Germany.,MPI, Max Planck Institute for Intelligent Systems, Tübingen, Germany
| | - Michael Ingrisch
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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14
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Mueller F, Fabritius MP, Stueckelschweiger L, Kiesl S, Moench S, Tiedt S, Rémi J, Kellert L, Herzberg M, Küpper C, Dimitriadis K, Ricke J, Puhr-Westerheide D, Liebig T, Kunz WG, Reidler P. CT after interhospital transfer in acute ischemic stroke: Imaging findings and impact of prior intravenous contrast administration. Front Neurol 2022; 13:1023147. [PMID: 36570440 PMCID: PMC9767970 DOI: 10.3389/fneur.2022.1023147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/07/2022] [Indexed: 12/12/2022] Open
Abstract
Objectives Large vessel occlusion (LVO) stroke patients routinely undergo interhospital transfer to endovascular thrombectomy capable centers. Imaging is often repeated with residual intravenous (IV) iodine contrast at post-transfer assessment. We determined imaging findings and the impact of residual contrast on secondary imaging. Anterior circulation LVO stroke patients were selected out of a consecutive cohort. Directly admitted patients were contrast naïve, and transferred patients had previously received IV iodine contrast for stroke assessment at the referring hospital. Two independent readers rated the visibility of residual contrast on non-contrast computed tomography (CT) after transfer and assessed the hyperdense vessel sign. Multivariate linear regression analysis was used to investigate the association of the Alberta Stroke Program Early CT score (ASPECTS) with prior contrast administration, time from symptom onset (TFSO), and CTP ischemic core volume in both directly admitted and transferred patients. Results We included 161 patients, with 62 (39%) transferred and 99 (62%) directly admitted patients. Compared between these groups, transferred patients had a longer TFSO-to-imaging at our institution (median: 212 vs. 75 min, p < 0.001) and lower ASPECTS (median: 8 vs. 9, p < 0.001). Regression analysis presented an independent association of ASPECTS with prior contrast administration (β = -0.25, p = 0.004) but not with TFSO (β = -0.03, p = 0.65). Intergroup comparison between transferred and directly admitted patients pointed toward a stronger association between ASPECTS and CTP ischemic core volume in transferred patients (β = -0.39 vs. β = -0.58, p = 0.06). Detectability of the hyperdense vessel sign was substantially lower after transfer (66 vs. 10%, p < 0.001). Conclusion Imaging alterations due to residual IV contrast are frequent in clinical practice and render the hyperdense vessel sign largely indetectable. Larger studies are needed to clarify the influence on the association between ASPECTS and ischemic core.
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Affiliation(s)
- Franziska Mueller
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | | | - Sophia Kiesl
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Sebastian Moench
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research, LMU Munich, Munich, Germany
| | - Jan Rémi
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Lars Kellert
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Moriz Herzberg
- Department of Diagnostic and Interventional Radiology, University Hospital Wuerzburg, Wuerzburg, Germany
| | - Clemens Küpper
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Konstantinos Dimitriadis
- Institute for Stroke and Dementia Research, LMU Munich, Munich, Germany,Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Thomas Liebig
- Department of Neuroradiology, University Hospital, LMU Munich, Munich, Germany
| | - Wolfgang G. Kunz
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Paul Reidler
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany,*Correspondence: Paul Reidler
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15
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Fabritius MP, Ricke J. Overview of Ongoing Clinical Trials on Radioembolization. Cardiovasc Intervent Radiol 2022; 45:1659-1662. [PMID: 36184696 PMCID: PMC9626408 DOI: 10.1007/s00270-022-03270-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 08/26/2022] [Indexed: 12/03/2022]
Affiliation(s)
- Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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16
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Öcal O, Zech CJ, Fabritius MP, Loewe C, van Delden O, Vandecaveye V, Gebauer B, Berg T, Sengel C, Bargellini I, Iezzi R, Benito A, Pech M, Gasbarrini A, Sangro B, Malfertheiner P, Ricke J, Seidensticker M. Non-hypervascular hepatobiliary phase hypointense lesions detected in patients with hepatocellular carcinoma: a post hoc analysis of SORAMIC trial to identify risk factors for progression. Eur Radiol 2022; 33:493-500. [PMID: 35881180 DOI: 10.1007/s00330-022-09000-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 05/20/2022] [Accepted: 06/29/2022] [Indexed: 12/01/2022]
Abstract
OBJECTIVES To identify clinical and imaging parameters associated with progression of non-hypervascular hepatobiliary phase hypointense lesions during follow-up in patients who received treatment for hepatocellular carcinoma. METHODS A total of 67 patients with 106 lesions were identified after screening 538 patients who underwent gadoxetic acid-enhanced MRI within the SORAMIC trial. All patients were allocated to the trial treatment according to the trial scheme, and 61 of 67 patients received systemic treatment with sorafenib (either alone or combined with locoregional therapies) during the trial period. Follow-up images after treatment according to trial scheme were reviewed for subsequent hypervascularization or > 1 cm size increase. The correlation between progression and several imaging and clinical parameters was assessed using univariable and multivariable analyses. RESULTS On a median 178 (range, 48-1072) days follow-up period, progression was encountered in 18 (16.9%) lesions in 12 (17.9%) patients. In univariable analysis size > 12.6 mm (p = 0.070), ECOG-PS (p = 0.025), hypointensity at T1-weighted imaging (p = 0.028), hyperintensity at T2-weighted imaging (p < 0.001), hyperintensity at DWI images (p = 0.007), and cirrhosis (p = 0.065) were correlated with progression during follow-up. Hyperintensity at T2 images (p = 0.011) was an independent risk factor for progression in multivariable analysis, as well as cirrhosis (p = 0.033) and ECOG-PS (p = 0.030). CONCLUSIONS Non-hypervascular hepatobiliary phase hypointense lesions are associated with subsequent progression after treatment in patients with HCC. T2 hyperintensity, diffusion restriction, cirrhosis, and higher ECOG-PS could identify lesions with increased risk. These factors should be considered for further diagnostic evaluation or treatment of such lesions. KEY POINTS • Non-hypervascular hepatobiliary phase hypointense lesions have considerable risk of progression in patients with hepatocellular carcinoma receiving treatment. • T2 hyperintensity, cirrhosis, ECOG-PS, and hyperintensity at DWI are associated with increased risk of progression. • Non-hypervascular hepatobiliary phase hypointense lesions should be considered in the decision-making process of locoregional therapies, especially in the presence of these risk factors.
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Affiliation(s)
- Osman Öcal
- Department of Radiology, University Hospital, Ludwig Maximilian University of Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Christoph J Zech
- Radiology and Nuclear Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, Ludwig Maximilian University of Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Christian Loewe
- Section of Cardiovascular and Interventional Radiology, Department of Bioimaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Otto van Delden
- Department of Radiology and Nuclear Medicine, Academic University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Bernhard Gebauer
- Department of Radiology, Charité - University Medicine Berlin, Berlin, Germany
| | - Thomas Berg
- Klinik und Poliklinik für Gastroenterologie, Sektion Hepatologie, Universitätsklinikum Leipzig, Leipzig, Germany
| | - Christian Sengel
- Radiology Department, Grenoble University Hospital, La Tronche, France
| | - Irene Bargellini
- Department of Vascular and Interventional Radiology, University Hospital of Pisa, Pisa, Italy
| | - Roberto Iezzi
- Fondazione Policlinico Universitario A. Gemelli IRCCS, UOC di Radiologia, Dipartimento di Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Rome, Italy
| | - Alberto Benito
- Abdominal Radiology Unit, Department of Radiology, Clínica Universidad de Navarra, Pamplona, Spain
| | - Maciej Pech
- Departments of Radiology and Nuclear Medicine, University of Magdeburg, Magdeburg, Germany
| | - Antonio Gasbarrini
- Fondazione Policlinico Universitario Gemelli IRCCS, Universita' Cattolica del Sacro Cuore, Rome, Italy
| | - Bruno Sangro
- Liver Unit, Clínica Universidad de Navarra and CIBEREHD, Pamplona, Spain
| | | | - Jens Ricke
- Department of Radiology, University Hospital, Ludwig Maximilian University of Munich, Marchioninistrasse 15, 81377, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, University Hospital, Ludwig Maximilian University of Munich, Marchioninistrasse 15, 81377, Munich, Germany.
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17
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Thunstedt DC, Schmutzer M, Fabritius MP, Thorsteinsdottir J, Kunz M, Ruscheweyh R, Straube A. Headache characteristics and postoperative course in Chiari I malformation. Cephalalgia 2022; 42:879-887. [PMID: 35236163 PMCID: PMC9315190 DOI: 10.1177/03331024221079296] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Chiari I malformation typically presents with cough headache. However,
migraine-like or tension-type-like headaches may also occur. There are
limited publications on Chiari I malformation-associated headache
semiologies and the effect of foramen magnum decompression on different
headache types. Methods A retrospective analysis complemented by structured phone interviews was
performed on 65 patients with Chiari I malformation, treated at our hospital
between 2010 and 2021. Headache semiology (according to ICHD-3), frequency,
intensity, and radiological characteristics were evaluated pre- and
postoperatively. Results We included 65 patients. 38 patients were female and 27 male. Mean age was
43.9 ± 15.7 years. Headache was predominant in 41 patients (63.0%).
Twenty-one patients had cough headache and 20 had atypical headache (12
migrainous, eight tension-type headache-like). Thirty-five patients with
headache underwent surgery. Frequency, intensity, and analgesic use was
significantly reduced in cough headache (p < 0.001).
Atypical headaches improved less (p = 0.004 to 0.176).
Exploratory analysis suggested that larger preoperative tonsillar descent
correlated with larger postoperative headache intensity relief
(p = 0.025). Conclusion Decompression was effective in Chiari I malformation-related cough headache.
Atypical headache responded less well, and the causal relation with Chiari I
malformation remains uncertain. For atypical headache, decompression should
only be considered after failed appropriate preventive therapy and within an
interdisciplinary approach involving a neurologist.
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Affiliation(s)
- Dennis C Thunstedt
- Department of Neurology, University Hospital, Ludwig Maximilians University (LMU), Munich, Germany
| | - Michael Schmutzer
- Department of Neurosurgery, University Hospital, Ludwig Maximilians University (LMU), Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, Ludwig Maximilians University (LMU), Munich, Germany
| | - Jun Thorsteinsdottir
- Department of Neurosurgery, University Hospital, Ludwig Maximilians University (LMU), Munich, Germany
| | - Mathias Kunz
- Department of Neurosurgery, University Hospital, Ludwig Maximilians University (LMU), Munich, Germany
| | - Ruth Ruscheweyh
- Department of Neurology, University Hospital, Ludwig Maximilians University (LMU), Munich, Germany
| | - Andreas Straube
- Department of Neurology, University Hospital, Ludwig Maximilians University (LMU), Munich, Germany
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18
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Holzgreve A, Völter F, Delker A, Kunz WG, Fabritius MP, Brendel M, Albert NL, Bartenstein P, Unterrainer M, Unterrainer LM. Detection of Splenic Tissue Using 99mTc-Labelled Denatured Red Blood Cells Scintigraphy—A Quantitative Single Center Analysis. Diagnostics (Basel) 2022; 12:diagnostics12020486. [PMID: 35204576 PMCID: PMC8871479 DOI: 10.3390/diagnostics12020486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/11/2022] [Accepted: 02/12/2022] [Indexed: 02/04/2023] Open
Abstract
Background: Red blood cells (RBC) scintigraphy can be used not only for detection of bleeding sites, but also of spleen tissue. However, there is no established quantitative readout. Therefore, we investigated uptake in suspected splenic lesions in direct quantitative correlation to sites of physiologic uptake in order to objectify the readout. Methods: 20 patients with Tc-99m-labelled RBC scintigraphy and SPECT/low-dose CT for assessment of suspected splenic tissue were included. Lesions were rated as vital splenic or non-splenic tissue, and uptake and physiologic uptake of bone marrow, pancreas, and spleen were then quantified using a volume-of-interest based approach. Hepatic uptake served as a reference. Results: The median uptake ratio was significantly higher in splenic (2.82 (range, 0.58–24.10), n = 47) compared to other lesions (0.49 (0.01–0.83), n = 7), p < 0.001, and 5 lesions were newly discovered. The median pancreatic uptake was 0.09 (range 0.03–0.67), bone marrow 0.17 (0.03–0.45), and orthotopic spleen 14.45 (3.04–29.82). Compared to orthotopic spleens, the pancreas showed lowest uptake (0.09 vs. 14.45, p = 0.004). Based on pancreatic uptake we defined a cutoff (0.75) to distinguish splenic from other tissues. Conclusion: As the uptake in extra-splenic regions is invariably low compared to splenules, it can be used as comparator for evaluating suspected splenic tissues.
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Affiliation(s)
- Adrien Holzgreve
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.V.); (A.D.); (M.B.); (N.L.A.); (P.B.); (L.M.U.)
- Correspondence:
| | - Friederike Völter
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.V.); (A.D.); (M.B.); (N.L.A.); (P.B.); (L.M.U.)
| | - Astrid Delker
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.V.); (A.D.); (M.B.); (N.L.A.); (P.B.); (L.M.U.)
| | - Wolfgang G. Kunz
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (W.G.K.); (M.P.F.); (M.U.)
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (W.G.K.); (M.P.F.); (M.U.)
| | - Matthias Brendel
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.V.); (A.D.); (M.B.); (N.L.A.); (P.B.); (L.M.U.)
| | - Nathalie L. Albert
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.V.); (A.D.); (M.B.); (N.L.A.); (P.B.); (L.M.U.)
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.V.); (A.D.); (M.B.); (N.L.A.); (P.B.); (L.M.U.)
| | - Marcus Unterrainer
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (W.G.K.); (M.P.F.); (M.U.)
| | - Lena M. Unterrainer
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.V.); (A.D.); (M.B.); (N.L.A.); (P.B.); (L.M.U.)
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19
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Wesp P, Grosu S, Graser A, Maurus S, Schulz C, Knösel T, Fabritius MP, Schachtner B, Yeh BM, Cyran CC, Ricke J, Kazmierczak PM, Ingrisch M. Deep learning in CT colonography: differentiating premalignant from benign colorectal polyps. Eur Radiol 2022; 32:4749-4759. [PMID: 35083528 PMCID: PMC9213389 DOI: 10.1007/s00330-021-08532-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/06/2021] [Accepted: 12/20/2021] [Indexed: 11/24/2022]
Abstract
Objectives To investigate the differentiation of premalignant from benign colorectal polyps detected by CT colonography using deep learning. Methods In this retrospective analysis of an average risk colorectal cancer screening sample, polyps of all size categories and morphologies were manually segmented on supine and prone CT colonography images and classified as premalignant (adenoma) or benign (hyperplastic polyp or regular mucosa) according to histopathology. Two deep learning models SEG and noSEG were trained on 3D CT colonography image subvolumes to predict polyp class, and model SEG was additionally trained with polyp segmentation masks. Diagnostic performance was validated in an independent external multicentre test sample. Predictions were analysed with the visualisation technique Grad-CAM++. Results The training set consisted of 107 colorectal polyps in 63 patients (mean age: 63 ± 8 years, 40 men) comprising 169 polyp segmentations. The external test set included 77 polyps in 59 patients comprising 118 polyp segmentations. Model SEG achieved a ROC-AUC of 0.83 and 80% sensitivity at 69% specificity for differentiating premalignant from benign polyps. Model noSEG yielded a ROC-AUC of 0.75, 80% sensitivity at 44% specificity, and an average Grad-CAM++ heatmap score of ≥ 0.25 in 90% of polyp tissue. Conclusions In this proof-of-concept study, deep learning enabled the differentiation of premalignant from benign colorectal polyps detected with CT colonography and the visualisation of image regions important for predictions. The approach did not require polyp segmentation and thus has the potential to facilitate the identification of high-risk polyps as an automated second reader. Key Points • Non-invasive deep learning image analysis may differentiate premalignant from benign colorectal polyps found in CT colonography scans. • Deep learning autonomously learned to focus on polyp tissue for predictions without the need for prior polyp segmentation by experts. • Deep learning potentially improves the diagnostic accuracy of CT colonography in colorectal cancer screening by allowing for a more precise selection of patients who would benefit from endoscopic polypectomy, especially for patients with polyps of 6–9 mm size. Supplementary Information The online version contains supplementary material available at 10.1007/s00330-021-08532-2.
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Affiliation(s)
- Philipp Wesp
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany.
| | - Sergio Grosu
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Anno Graser
- Radiologie München, Burgstraße 7, 80331, Munich, Germany
| | - Stefan Maurus
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Christian Schulz
- Department of Medicine II, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Thomas Knösel
- Department of Pathology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Balthasar Schachtner
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany.,Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL), Max-Lebsche-Platz 31, 81377, Munich, Germany
| | - Benjamin M Yeh
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, 513 Parnassus Ave, San Francisco, CA, 94117, USA
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Philipp M Kazmierczak
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Michael Ingrisch
- Department of Radiology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
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20
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Puhr-Westerheide D, Reich J, Sabel BO, Kunz WG, Fabritius MP, Reidler P, Rübenthaler J, Ingrisch M, Wassilowsky D, Irlbeck M, Ricke J, Gresser E. Sequential Organ Failure Assessment Outperforms Quantitative Chest CT Imaging Parameters for Mortality Prediction in COVID-19 ARDS. Diagnostics (Basel) 2021; 12:diagnostics12010010. [PMID: 35054177 PMCID: PMC8775048 DOI: 10.3390/diagnostics12010010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 01/28/2023] Open
Abstract
(1) Background: Respiratory insufficiency with acute respiratory distress syndrome (ARDS) and multi-organ dysfunction leads to high mortality in COVID-19 patients. In times of limited intensive care unit (ICU) resources, chest CTs became an important tool for the assessment of lung involvement and for patient triage despite uncertainties about the predictive diagnostic value. This study evaluated chest CT-based imaging parameters for their potential to predict in-hospital mortality compared to clinical scores. (2) Methods: 89 COVID-19 ICU ARDS patients requiring mechanical ventilation or continuous positive airway pressure mask ventilation were included in this single center retrospective study. AI-based lung injury assessment and measurements indicating pulmonary hypertension (PA-to-AA ratio) on admission CT, oxygenation indices, lung compliance and sequential organ failure assessment (SOFA) scores on ICU admission were assessed for their diagnostic performance to predict in-hospital mortality. (3) Results: CT severity scores and PA-to-AA ratios were not significantly associated with in-hospital mortality, whereas the SOFA score showed a significant association (p < 0.001). In ROC analysis, the SOFA score resulted in an area under the curve (AUC) for in-hospital mortality of 0.74 (95%-CI 0.63–0.85), whereas CT severity scores (0.53, 95%-CI 0.40–0.67) and PA-to-AA ratios (0.46, 95%-CI 0.34–0.58) did not yield sufficient AUCs. These results were consistent for the subgroup of more critically ill patients with moderate and severe ARDS on admission (oxygenation index <200, n = 53) with an AUC for SOFA score of 0.77 (95%-CI 0.64–0.89), compared to 0.55 (95%-CI 0.39–0.72) for CT severity scores and 0.51 (95%-CI 0.35–0.67) for PA-to-AA ratios. (4) Conclusions: Severe COVID-19 disease is not limited to lung (vessel) injury but leads to a multi-organ involvement. The findings of this study suggest that risk stratification should not solely be based on chest CT parameters but needs to include multi-organ failure assessment for COVID-19 ICU ARDS patients for optimized future patient management and resource allocation.
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Affiliation(s)
- Daniel Puhr-Westerheide
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
- Correspondence: ; Tel.: +49-89-4400-73620
| | - Jakob Reich
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Bastian O. Sabel
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Wolfgang G. Kunz
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Paul Reidler
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Johannes Rübenthaler
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Michael Ingrisch
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Dietmar Wassilowsky
- Department of Anesthesiology, University Hospital, LMU Munich, 81377 Munich, Germany; (D.W.); (M.I.)
| | - Michael Irlbeck
- Department of Anesthesiology, University Hospital, LMU Munich, 81377 Munich, Germany; (D.W.); (M.I.)
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
| | - Eva Gresser
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (P.R.); (J.R.); (M.I.); (J.R.); (E.G.)
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21
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Burgers LD, Luong B, Li Y, Fabritius MP, Michalakis S, Reichel CA, Müller R, Fürst R. The natural product vioprolide A exerts anti-inflammatory actions through inhibition of its cellular target NOP14 and downregulation of importin-dependent NF-ĸB p65 nuclear translocation. Biomed Pharmacother 2021; 144:112255. [PMID: 34607110 DOI: 10.1016/j.biopha.2021.112255] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/18/2021] [Accepted: 09/26/2021] [Indexed: 01/21/2023] Open
Abstract
Chronic inflammation is characterized by persisting leukocyte infiltration of the affected tissue, which is enabled by activated endothelial cells (ECs). Chronic inflammatory diseases remain a major pharmacotherapeutic challenge, and thus the search for novel drugs and drug targets is an ongoing demand. We have identified the natural product vioprolide A (vioA) to exert anti-inflammatory actions in vivo and in ECs in vitro through inhibition of its cellular target nucleolar protein 14 (NOP14). VioA attenuated the infiltration of microglia and macrophages during laser-induced murine choroidal neovascularization and the leukocyte trafficking through the vascular endothelium in the murine cremaster muscle. Mechanistic studies revealed that vioA downregulates EC adhesion molecules and the tumor necrosis factor receptor (TNFR) 1 by decreasing the de novo protein synthesis in ECs. Most importantly, we found that inhibition of importin-dependent NF-ĸB p65 nuclear translocation is a crucial part of the action of vioA leading to reduced NF-ĸB promotor activity and inflammatory gene expression. Knockdown experiments revealed a causal link between the cellular target NOP14 and the anti-inflammatory action of vioA, classifying the natural product as unique drug lead for anti-inflammatory therapeutics.
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Affiliation(s)
- Luisa D Burgers
- Institute of Pharmaceutical Biology, Faculty of Biochemistry, Chemistry and Pharmacy, Goethe University, Frankfurt, Germany
| | - Betty Luong
- Institute of Pharmaceutical Biology, Faculty of Biochemistry, Chemistry and Pharmacy, Goethe University, Frankfurt, Germany
| | - Yanfen Li
- Department of Ophthalmology, University Hospital, LMU Munich, Munich, Germany
| | - Matthias P Fabritius
- Department of Otorhinolaryngology and Walter Brendel Centre of Experimental Medicine, Clinical Centre of LMU Munich, Munich, Germany; Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Christoph A Reichel
- Department of Otorhinolaryngology and Walter Brendel Centre of Experimental Medicine, Clinical Centre of LMU Munich, Munich, Germany
| | - Rolf Müller
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland, Helmholtz Center for Infection Research and Department of Pharmacy at Saarland University, Saarbrücken, Germany
| | - Robert Fürst
- Institute of Pharmaceutical Biology, Faculty of Biochemistry, Chemistry and Pharmacy, Goethe University, Frankfurt, Germany; LOEWE Center for Translational Biodiversity Genomics (LOEWE-TBG), Frankfurt, Germany.
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22
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Fabritius MP, Ben Khaled N, Kunz WG, Ricke J, Seidensticker M. Image-Guided Local Treatment for Unresectable Intrahepatic Cholangiocarcinoma-Role of Interventional Radiology. J Clin Med 2021; 10:jcm10235574. [PMID: 34884275 PMCID: PMC8658286 DOI: 10.3390/jcm10235574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/24/2021] [Accepted: 11/24/2021] [Indexed: 01/27/2023] Open
Abstract
Intrahepatic cholangiocarcinoma is a highly aggressive malignancy with an increasing incidence in recent years. Prognosis is poor and most patients are not eligible for resection at the time of initial diagnosis due to the anatomic location, inadequate hepatic reserve, limiting comorbidities or metastatic disease. Several locoregional therapies from the field of interventional radiology exist for patients who are not amenable for surgery, or in case of local recurrence as a single treatment modality or combined with systemic treatment. To date, evidence is limited, with most conclusions drawn from single-center studies with small patient cohorts, often treated in the salvage situation or for local recurrence after initial resection. Nevertheless, the results are promising and suggest a survival benefit in selected patients. This narrative review focuses on the use of different locoregional treatment options for intrahepatic cholangiocarcinoma.
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Affiliation(s)
- Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany; (W.G.K.); (J.R.)
- Correspondence: (M.P.F); (M.S.)
| | - Najib Ben Khaled
- Department of Medicine II, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany;
- German Cancer Consortium (DKTK), Partner Site Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Wolfgang G. Kunz
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany; (W.G.K.); (J.R.)
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany; (W.G.K.); (J.R.)
| | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377 Munich, Germany; (W.G.K.); (J.R.)
- Correspondence: (M.P.F); (M.S.)
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Fabritius MP, Geyer T, Ahmaddy F, Albert NL, Bartenstein P, Tiling R, Rübenthaler J, Holzgreve A. Breast Cancer Metastasis Mimicking Meningioma in 68Ga-DOTATOC PET/CT. Clin Nucl Med 2021; 46:922-923. [PMID: 34132678 DOI: 10.1097/rlu.0000000000003770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT 68Ga-DOTATOC PET/CT is a reliable imaging modality in the diagnosis and therapy planning of symptomatic meningiomas. We present a case of a 74-year-old woman where a supposed SSTR-positive sphenoid wing meningioma turned out to be a breast cancer metastasis. Our case shows that dural metastases from breast cancer might represent a clinical pitfall in 68Ga-DOTATOC PET/CT.
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Affiliation(s)
| | | | - Freba Ahmaddy
- Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | | | | | - Reinhold Tiling
- Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | | | - Adrien Holzgreve
- Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
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Ben Khaled N, Jacob S, Rössler D, Bösch F, De Toni EN, Werner J, Ricke J, Mayerle J, Seidensticker M, Schulz C, Fabritius MP. Current State of Multidisciplinary Treatment in Cholangiocarcinoma. Dig Dis 2021; 40:581-595. [PMID: 34695826 DOI: 10.1159/000520346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 10/19/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Cholangiocarcinoma (CCA) is a highly aggressive malignancy, and its incidence seems to be increasing over the last years. Given the high rate of irresectability at the time of initial diagnosis, new treatment approaches are important to achieve better patient outcomes. Our review provides an overview of current multimodal therapy options across different specialties of gastroenterology/oncology, surgery, and interventional radiology. SUMMARY CCA is subdivided into clinically and molecularly distinct phenotypes. Surgical treatment currently is the only potentially curative therapy, but unfortunately, the majority of all patients are not eligible for resection at the time of initial diagnosis due to anatomic location, inadequate hepatic reserve, metastatic disease, or limiting comorbidities. However, multimodal treatment options are available to prolong survival, relieve symptoms, and maintain life quality. KEY MESSAGES The treatment of CCA is complex and requires close interdisciplinary collaboration and individualized treatment planning to ensure optimal patient care at specialized centers. Molecular profiling of patients and inclusion into clinical trials is highly recommended.
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Affiliation(s)
- Najib Ben Khaled
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Sven Jacob
- Department of General-, Visceral- and Transplantation-Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Daniel Rössler
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Florian Bösch
- Department of General-, Visceral- and Transplantation-Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Enrico N De Toni
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Jens Werner
- Department of General-, Visceral- and Transplantation-Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Julia Mayerle
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Christian Schulz
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
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Grawe F, Cahya A, Fabritius MP, Beyer L, Wenter V, Ruebenthaler J, Geyer T, Burgard C, Bartenstein P, Ilhan H, Spitzweg C, Todica A. Course of Disease and Clinical Management of Patients with Poorly Differentiated Thyroid Carcinoma. Cancers (Basel) 2021; 13:cancers13215309. [PMID: 34771473 PMCID: PMC8582377 DOI: 10.3390/cancers13215309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 11/23/2022] Open
Abstract
Simple Summary Poorly differentiated thyroid carcinoma (PDTC) represents a rare but aggressive variant of thyroid carcinoma and contributes to a significant proportion of thyroid carcinoma-associated deaths. Studies on PDTC are rare; therefore, we aim to assess the clinical course of these patients, evaluate the prognostic value of response to initial radioiodine therapy and identify risk factors for poor prognosis to optimize the clinical management of patients with PDCT. Abstract Background: In patients with poorly differentiated thyroid carcinoma, the clinical course and prognostic value of response to initial radioiodine therapy is evaluated. Methods: In 47 patients, clinical and imaging features were analyzed. Patients were stratified in no (NED), biochemical (B-ED) and structural evidence of disease (S-ED) assessed at the first diagnostic control and its impact on survival was evaluated. Further, possible risk factors for a shorter disease-specific survival rate (DSS) were analyzed. Results: In total, 17/47 patients consisted of NED, 10/47 were B-ED and 20/47 S-ED patients. At the last follow-up, 18/47 patients were NED, 2/47 patients B-ED and 27/47 patients S-ED. The median survival time was only reached for the S-ED group (median 3.9 years, 95%CI 2.8–5.1 years) and was not reached in the B-ED and NED groups. Metastases were diagnosed by a 18F-FDG-PET/CT scan in all cases and a multivariate analysis showed that the PET-positivity of metastases was the only significant predictor of DSS (p = 0.036). Conclusion: The response to initial surgery and radioiodine therapy in PDTC patients can achieve an excellent outcome and a further follow-up should be refined based on findings at the first diagnostic control. However, patients with an incomplete response and metastatic patients who become mostly radioiodine refractory show a significantly shorter survival, which makes accurate staging by 18F-FDG-PET/CT imaging crucial.
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Affiliation(s)
- Freba Grawe
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
| | - Atika Cahya
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (J.R.); (T.G.)
| | - Leonie Beyer
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
| | - Vera Wenter
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
| | - Johannes Ruebenthaler
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (J.R.); (T.G.)
| | - Thomas Geyer
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (J.R.); (T.G.)
| | - Caroline Burgard
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
- Comprehensive Cancer Center (CCC LMU) and Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany;
| | - Harun Ilhan
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
- Comprehensive Cancer Center (CCC LMU) and Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany;
| | - Christine Spitzweg
- Comprehensive Cancer Center (CCC LMU) and Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany;
- Department of Internal Medicine IV, University Hospital, LMU Munich, 81377 Munich, Germany
| | - Andrei Todica
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.G.); (A.C.); (L.B.); (V.W.); (C.B.); (P.B.); (H.I.)
- Comprehensive Cancer Center (CCC LMU) and Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany;
- Correspondence:
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Ibrahim A, Widaatalla Y, Refaee T, Primakov S, Miclea RL, Öcal O, Fabritius MP, Ingrisch M, Ricke J, Hustinx R, Mottaghy FM, Woodruff HC, Seidensticker M, Lambin P. Reproducibility of CT-Based Hepatocellular Carcinoma Radiomic Features across Different Contrast Imaging Phases: A Proof of Concept on SORAMIC Trial Data. Cancers (Basel) 2021; 13:cancers13184638. [PMID: 34572870 PMCID: PMC8468150 DOI: 10.3390/cancers13184638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/11/2021] [Accepted: 09/13/2021] [Indexed: 12/17/2022] Open
Abstract
Simple Summary Radiomics has been reported to have potential for correlating with clinical outcomes. However, handcrafted radiomic features (HRFs)—the quantitative features extracted from medical images—are limited by their sensitivity to variations in scanning parameters. Furthermore, radiomics analyses require big data with good quality to achieve desirable performances. In this study, we investigated the reproducibility of HRFs between scans acquired with the same scanning parameters except for the imaging phase (arterial and portal venous phases) to assess the possibilities of merging scans from different phases or replacing missing scans from a phase with other phases to increase data entries. Additionally, we assessed the potential of ComBat harmonization to remove batch effects attributed to this variation. Our results show that the majority of HRFs were not reproducible between the arterial and portal venous phases before or after ComBat harmonization. We provide a guide for analyzing scans of different imaging phases. Abstract Handcrafted radiomic features (HRFs) are quantitative imaging features extracted from regions of interest on medical images which can be correlated with clinical outcomes and biologic characteristics. While HRFs have been used to train predictive and prognostic models, their reproducibility has been reported to be affected by variations in scan acquisition and reconstruction parameters, even within the same imaging vendor. In this work, we evaluated the reproducibility of HRFs across the arterial and portal venous phases of contrast-enhanced computed tomography images depicting hepatocellular carcinomas, as well as the potential of ComBat harmonization to correct for this difference. ComBat harmonization is a method based on Bayesian estimates that was developed for gene expression arrays, and has been investigated as a potential method for harmonizing HRFs. Our results show that the majority of HRFs are not reproducible between the arterial and portal venous imaging phases, yet a number of HRFs could be used interchangeably between those phases. Furthermore, ComBat harmonization increased the number of reproducible HRFs across both phases by 1%. Our results guide the pooling of arterial and venous phases from different patients in an effort to increase cohort size, as well as joint analysis of the phases.
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Affiliation(s)
- Abdalla Ibrahim
- The D-Lab, Department of Precision Medicine, GROW—School for Oncology, Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (S.P.); (H.C.W.); (P.L.)
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Centre+, 6200 MD Maastricht, The Netherlands; (R.L.M.); (F.M.M.)
- Division of Nuclear Medicine and Oncological Imaging, Department of Medical Physics, University Hospital of Liege and GIGA CRC-In Vivo Imaging, University of Liege, 4000 Liege, Belgium;
- Department of Nuclear Medicine and Comprehensive Diagnostic Center Aachen (CDCA), University Hospital RWTH Aachen University, 52074 Aachen, Germany
- Correspondence: (A.I.); (T.R.)
| | - Yousif Widaatalla
- The D-Lab, Department of Precision Medicine, GROW—School for Oncology, Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (S.P.); (H.C.W.); (P.L.)
| | - Turkey Refaee
- The D-Lab, Department of Precision Medicine, GROW—School for Oncology, Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (S.P.); (H.C.W.); (P.L.)
- Department of Diagnostic Radiology, Faculty of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
- Correspondence: (A.I.); (T.R.)
| | - Sergey Primakov
- The D-Lab, Department of Precision Medicine, GROW—School for Oncology, Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (S.P.); (H.C.W.); (P.L.)
- Department of Nuclear Medicine and Comprehensive Diagnostic Center Aachen (CDCA), University Hospital RWTH Aachen University, 52074 Aachen, Germany
| | - Razvan L. Miclea
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Centre+, 6200 MD Maastricht, The Netherlands; (R.L.M.); (F.M.M.)
| | - Osman Öcal
- Department of Radiology, University Hospital, LMU Munich, 80336 Munich, Germany; (O.Ö.); (M.P.F.); (M.I.); (J.R.); (M.S.)
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 80336 Munich, Germany; (O.Ö.); (M.P.F.); (M.I.); (J.R.); (M.S.)
| | - Michael Ingrisch
- Department of Radiology, University Hospital, LMU Munich, 80336 Munich, Germany; (O.Ö.); (M.P.F.); (M.I.); (J.R.); (M.S.)
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, 80336 Munich, Germany; (O.Ö.); (M.P.F.); (M.I.); (J.R.); (M.S.)
| | - Roland Hustinx
- Division of Nuclear Medicine and Oncological Imaging, Department of Medical Physics, University Hospital of Liege and GIGA CRC-In Vivo Imaging, University of Liege, 4000 Liege, Belgium;
| | - Felix M. Mottaghy
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Centre+, 6200 MD Maastricht, The Netherlands; (R.L.M.); (F.M.M.)
- Department of Nuclear Medicine and Comprehensive Diagnostic Center Aachen (CDCA), University Hospital RWTH Aachen University, 52074 Aachen, Germany
| | - Henry C. Woodruff
- The D-Lab, Department of Precision Medicine, GROW—School for Oncology, Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (S.P.); (H.C.W.); (P.L.)
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Centre+, 6200 MD Maastricht, The Netherlands; (R.L.M.); (F.M.M.)
| | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, 80336 Munich, Germany; (O.Ö.); (M.P.F.); (M.I.); (J.R.); (M.S.)
| | - Philippe Lambin
- The D-Lab, Department of Precision Medicine, GROW—School for Oncology, Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (S.P.); (H.C.W.); (P.L.)
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Centre+, 6200 MD Maastricht, The Netherlands; (R.L.M.); (F.M.M.)
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Puhr-Westerheide D, Froelich MF, Solyanik O, Gresser E, Reidler P, Fabritius MP, Klein M, Dimitriadis K, Ricke J, Cyran CC, Kunz WG, Kazmierczak PM. Cost-effectiveness of short-protocol emergency brain MRI after negative non-contrast CT for minor stroke detection. Eur Radiol 2021; 32:1117-1126. [PMID: 34455484 PMCID: PMC8794930 DOI: 10.1007/s00330-021-08222-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/23/2021] [Accepted: 06/25/2021] [Indexed: 11/29/2022]
Abstract
Objectives To investigate the cost-effectiveness of supplemental short-protocol brain MRI after negative non-contrast CT for the detection of minor strokes in emergency patients with mild and unspecific neurological symptoms. Methods The economic evaluation was centered around a prospective single-center diagnostic accuracy study validating the use of short-protocol brain MRI in the emergency setting. A decision-analytic Markov model distinguished the strategies “no additional imaging” and “additional short-protocol MRI” for evaluation. Minor stroke was assumed to be missed in the initial evaluation in 40% of patients without short-protocol MRI. Specialized post-stroke care with immediate secondary prophylaxis was assumed for patients with detected minor stroke. Utilities and quality-of-life measures were estimated as quality-adjusted life years (QALYs). Input parameters were obtained from the literature. The Markov model simulated a follow-up period of up to 30 years. Willingness to pay was set to $100,000 per QALY. Cost-effectiveness was calculated and deterministic and probabilistic sensitivity analysis was performed. Results Additional short-protocol MRI was the dominant strategy with overall costs of $26,304 (CT only: $27,109). Cumulative calculated effectiveness in the CT-only group was 14.25 QALYs (short-protocol MRI group: 14.31 QALYs). In the deterministic sensitivity analysis, additional short-protocol MRI remained the dominant strategy in all investigated ranges. Probabilistic sensitivity analysis results from the base case analysis were confirmed, and additional short-protocol MRI resulted in lower costs and higher effectiveness. Conclusion Additional short-protocol MRI in emergency patients with mild and unspecific neurological symptoms enables timely secondary prophylaxis through detection of minor strokes, resulting in lower costs and higher cumulative QALYs. Key Points • Short-protocol brain MRI after negative head CT in selected emergency patients with mild and unspecific neurological symptoms allows for timely detection of minor strokes. • This strategy supports clinical decision-making with regard to immediate initiation of secondary prophylactic treatment, potentially preventing subsequent major strokes with associated high costs and reduced QALY. • According to the Markov model, additional short-protocol MRI remained the dominant strategy over wide variations of input parameters, even when assuming disproportionally high costs of the supplemental MRI scan.
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Affiliation(s)
- Daniel Puhr-Westerheide
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
| | - Matthias F Froelich
- Department of Radiology and Nuclear Medicine, University Medical Centre Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - Olga Solyanik
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Eva Gresser
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Paul Reidler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias Klein
- Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Konstantin Dimitriadis
- Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.,Institute for Stroke and Dementia Research (ISD), University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Wolfgang G Kunz
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Philipp M Kazmierczak
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
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28
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Holzgreve A, Fabritius MP, Knösel T, Mittlmeier LM, Rübenthaler J, Tiling R, Auernhammer CJ, Bartenstein P, Unterrainer M. Molecular Imaging with 18F-FDG PET/CT and 99mTc-MIBI SPECT/CT in Osteitis Fibrosa Cystica Generalisata. Diagnostics (Basel) 2021; 11:diagnostics11081355. [PMID: 34441290 PMCID: PMC8393991 DOI: 10.3390/diagnostics11081355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 11/27/2022] Open
Abstract
Benign so-called “brown tumors” secondary to hyperparathyroidism are a rare diagnostic pitfall due to their impressively malignant-like character in various imaging modalities. We present the case of a 65-year-old male patient with multiple unclear osteolytic lesions on prior imaging suspicious for metastatic malignant disease. Eventually, findings of 18F-FDG PET/CT staging and 99mTc-MIBI scintigraphy resulted in revision of the initially suspected malignant diagnosis. This case illustrates how molecular imaging findings non-invasively corroborate the correct diagnosis of osteitis fibrosa cystica generalisata with the formation of multiple benign brown tumors.
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Affiliation(s)
- Adrien Holzgreve
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (L.M.M.); (R.T.); (P.B.)
- Correspondence: ; Tel.: +49-89-4400-74646
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (J.R.); (M.U.)
| | - Thomas Knösel
- Institute of Pathology, Faculty of Medicine, LMU Munich, 81377 Munich, Germany;
| | - Lena M. Mittlmeier
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (L.M.M.); (R.T.); (P.B.)
| | - Johannes Rübenthaler
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (J.R.); (M.U.)
| | - Reinhold Tiling
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (L.M.M.); (R.T.); (P.B.)
| | | | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (L.M.M.); (R.T.); (P.B.)
| | - Marcus Unterrainer
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (J.R.); (M.U.)
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Gresser E, Reich J, Sabel BO, Kunz WG, Fabritius MP, Rübenthaler J, Ingrisch M, Wassilowsky D, Irlbeck M, Ricke J, Puhr-Westerheide D. Risk Stratification for ECMO Requirement in COVID-19 ICU Patients Using Quantitative Imaging Features in CT Scans on Admission. Diagnostics (Basel) 2021; 11:diagnostics11061029. [PMID: 34205176 PMCID: PMC8228774 DOI: 10.3390/diagnostics11061029] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 05/29/2021] [Accepted: 05/31/2021] [Indexed: 01/28/2023] Open
Abstract
(1) Background: Extracorporeal membrane oxygenation (ECMO) therapy in intensive care units (ICUs) remains the last treatment option for Coronavirus disease 2019 (COVID-19) patients with severely affected lungs but is highly resource demanding. Early risk stratification for the need of ECMO therapy upon admission to the hospital using artificial intelligence (AI)-based computed tomography (CT) assessment and clinical scores is beneficial for patient assessment and resource management; (2) Methods: Retrospective single-center study with 95 confirmed COVID-19 patients admitted to the participating ICUs. Patients requiring ECMO therapy (n = 14) during ICU stay versus patients without ECMO treatment (n = 81) were evaluated for discriminative clinical prediction parameters and AI-based CT imaging features and their diagnostic potential to predict ECMO therapy. Reported patient data include clinical scores, AI-based CT findings and patient outcomes; (3) Results: Patients subsequently allocated to ECMO therapy had significantly higher sequential organ failure (SOFA) scores (p < 0.001) and significantly lower oxygenation indices on admission (p = 0.009) than patients with standard ICU therapy. The median time from hospital admission to ECMO placement was 1.4 days (IQR 0.2-4.0). The percentage of lung involvement on AI-based CT assessment on admission to the hospital was significantly higher in ECMO patients (p < 0.001). In binary logistic regression analyses for ECMO prediction including age, sex, body mass index (BMI), SOFA score on admission, lactate on admission and percentage of lung involvement on admission CTs, only SOFA score (OR 1.32, 95% CI 1.08-1.62) and lung involvement (OR 1.06, 95% CI 1.01-1.11) were significantly associated with subsequent ECMO allocation. Receiver operating characteristic (ROC) curves showed an area under the curve (AUC) of 0.83 (95% CI 0.73-0.94) for lung involvement on admission CT and 0.82 (95% CI 0.72-0.91) for SOFA scores on ICU admission. A combined parameter of SOFA on ICU admission and lung involvement on admission CT yielded an AUC of 0.91 (0.84-0.97) with a sensitivity of 0.93 and a specificity of 0.84 for ECMO prediction; (4) Conclusions: AI-based assessment of lung involvement on CT scans on admission to the hospital and SOFA scoring, especially if combined, can be used as risk stratification tools for subsequent requirement for ECMO therapy in patients with severe COVID-19 disease to improve resource management in ICU settings.
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Affiliation(s)
- Eva Gresser
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
- Correspondence: ; Tel.: +49-89-4400-73620
| | - Jakob Reich
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
| | - Bastian O. Sabel
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
| | - Wolfgang G. Kunz
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
| | - Johannes Rübenthaler
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
| | - Michael Ingrisch
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
| | - Dietmar Wassilowsky
- Department of Anesthesiology, University Hospital, LMU Munich, 81377 Munich, Germany; (D.W.); (M.I.)
| | - Michael Irlbeck
- Department of Anesthesiology, University Hospital, LMU Munich, 81377 Munich, Germany; (D.W.); (M.I.)
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
| | - Daniel Puhr-Westerheide
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (B.O.S.); (W.G.K.); (M.P.F.); (J.R.); (M.I.); (J.R.); (D.P.-W.)
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Fabritius MP, Tiedt S, Puhr-Westerheide D, Grosu S, Maurus S, Schwarze V, Rübenthaler J, Stueckelschweiger L, Ricke J, Liebig T, Kellert L, Feil K, Dimitriadis K, Kunz WG, Reidler P. Computed Tomography Perfusion Deficit Volumes Predict Functional Outcome in Patients With Basilar Artery Occlusion. Stroke 2021; 52:2016-2023. [PMID: 33947212 DOI: 10.1161/strokeaha.120.032924] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Matthias P Fabritius
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research (S.T., K.D.), University Hospital, LMU Munich, Germany
| | - Daniel Puhr-Westerheide
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Sergio Grosu
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Stefan Maurus
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Vincent Schwarze
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Johannes Rübenthaler
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Lena Stueckelschweiger
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Jens Ricke
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Thomas Liebig
- Department of Neuroradiology (T.L.), University Hospital, LMU Munich, Germany
| | - Lars Kellert
- Department of Neurology (L.K., K.F., K.D.), University Hospital, LMU Munich, Germany
| | - Katharina Feil
- Department of Neurology (L.K., K.F., K.D.), University Hospital, LMU Munich, Germany.,German Center for Vertigo and Balance Disorders (K.F.), University Hospital, LMU Munich, Germany
| | - Konstantinos Dimitriadis
- Institute for Stroke and Dementia Research (S.T., K.D.), University Hospital, LMU Munich, Germany.,Department of Neurology (L.K., K.F., K.D.), University Hospital, LMU Munich, Germany
| | - Wolfgang G Kunz
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
| | - Paul Reidler
- Department of Radiology (M.P.F., D.P.-W., S.G., S.M., V.S., J.R., L.S., J.R., W.G.K., P.R.), University Hospital, LMU Munich, Germany
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Stueckelschweiger L, Tiedt S, Puhr-Westerheide D, Fabritius MP, Mueller F, Kellert L, Maurus S, Grosu S, Rueckel J, Herzberg M, Liebig T, Ricke J, Dimitriadis K, Kunz WG, Reidler P. Decomposing Acute Symptom Severity in Large Vessel Occlusion Stroke: Association With Multiparametric CT Imaging and Clinical Parameters. Front Neurol 2021; 12:651387. [PMID: 33776900 PMCID: PMC7991695 DOI: 10.3389/fneur.2021.651387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 02/15/2021] [Indexed: 12/11/2022] Open
Abstract
Background and Purpose: Acute ischemic stroke of the anterior circulation due to large vessel occlusion (LVO) is a multifactorial process, which causes neurologic symptoms of different degree. Our aim was to examine the impact of neuromorphologic and vascular correlates as well as clinical factors on acute symptom severity in LVO stroke. Methods: We selected LVO stroke patients with known onset time from a consecutive cohort which underwent multiparametric CT including non-contrast CT, CT angiography and CT perfusion (CTP) before thrombectomy. Software-based quantification was used to calculate CTP total ischemic and ischemic core volume. Symptom severity was assessed using the National Institutes of Health Stroke Scale (NIHSS) upon admission. Multivariable regression analysis was performed to determine independent associations of admission NIHSS with imaging and clinical parameters. Receiver operating characteristics (ROC) analyses were used to examine performance of imaging parameters to classify symptom severity. Results: We included 142 patients. Linear and ordinal regression analyses for NIHSS and NIHSS severity groups identified significant associations for total ischemic volume [β = 0.31, p = 0.01; Odds ratio (OR) = 1.11, 95%-confidence-interval (CI): 1.02-1.19], clot burden score (β = -0.28, p = 0.01; OR = 0.76, 95%-CI: 0.64-0.90) and age (β = 0.17, p = 0.04). No association was found for ischemic core volume, stroke side, collaterals and time from onset. Stroke topography according to the Alberta Stroke Program CT Score template did not display significant influence after correction for multiple comparisons. AUC for classification of the NIHSS threshold ≥6 by total ischemic volume was 0.81 (p < 0.001). Conclusions: We determined total ischemic volume, clot burden and age as relevant drivers for baseline NIHSS in acute LVO stroke. This suggests that not only mere volume but also degree of occlusion influences symptom severity. Use of imaging parameters as surrogate for baseline NIHSS reached limited performance underlining the need for combined clinical and imaging assessment in acute stroke management.
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Affiliation(s)
- Lena Stueckelschweiger
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Daniel Puhr-Westerheide
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Franziska Mueller
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Lars Kellert
- Department of Neurology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Stefan Maurus
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Sergio Grosu
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Johannes Rueckel
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Moriz Herzberg
- Institute of Neuroradiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany.,Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany
| | - Thomas Liebig
- Institute of Neuroradiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Konstantinos Dimitriadis
- Institute for Stroke and Dementia Research, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany.,Department of Neurology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Wolfgang G Kunz
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Paul Reidler
- Department of Radiology, University Hospital, Ludwig-Maximilians-University of Munich, Munich, Germany
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Marschner CA, Zhang L, Schwarze V, Völckers W, Froelich MF, von Münchhausen N, Schnitzer ML, Geyer T, Fabritius MP, Rübenthaler J, Clevert DA. The diagnostic value of contrast-enhanced ultrasound (CEUS) for assessing hepatocellular carcinoma compared to histopathology; a retrospective single-center analysis of 119 patients1. Clin Hemorheol Microcirc 2021; 76:453-458. [PMID: 33216017 DOI: 10.3233/ch-209221] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND HCC as the 6th most common tumor entity with the fourth highest mortality and an increasing prevalence especially due to today's lifestyle acquires a high attention in the clinical setting. Beside CECT and CEMRI, CEUS depicts a dynamic, low-risk and radiation free imaging method that finds its use mainly in screening and active surveillance programs. PURPOSE The aim of the retrospective study was to evaluate the diagnostic value of CEUS in correlation to pathologic findings. MATERIALS AND METHODS Between 2004 and 2018 a total number of 119 patients were included in this retrospective single-center study. Every patient underwent CEUS in addition to a native B-mode and Color-Doppler scan. After given informed consent SonoVue® (Bracco, Milan, Italy), a second-generation blood-pool agent, was used as contrast medium. Every examination was performed and interpreted by a single experienced radiologist (EFSUMB level 3). A low mechanical index (MI) of <0,2 was chosen to obtain a good imaging quality. RESULTS All 119 included patients received CEUS followed by a liver biopsy for inter-modality comparison. In correlation to the pathology results, CEUS showed a diagnostic sensitivity of 96,6%, a specificity of 63,9%, a PPV of 86,7% and a NPV of 88,5% by detecting liver lesions suspicious for HCC. According to the Cohen's Kappa coefficient (k = 0,659) CEUS shows a strong inter-modality agreement in comparison to the histopathological finding. CONCLUSION With a high sensitivity and a strong cross-modality comparability to histopathology, the CEUS is highly effective in the detection of suspicious HCC lesions.
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Affiliation(s)
- C A Marschner
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - L Zhang
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - V Schwarze
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - W Völckers
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - M F Froelich
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Mannheim, Germany
| | - N von Münchhausen
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, Mannheim, Germany
| | - M L Schnitzer
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - T Geyer
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - M P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - J Rübenthaler
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - D-A Clevert
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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Holzgreve A, Fabritius MP, Knösel T, Renz BW, Lindner LH, Di Gioia D, Bartenstein P, Rübenthaler J, Tiling R. 18F-FDG PET/CT for Monitoring of Disease Progression in Metastatic Perivascular Epithelioid Cell Tumor. Clin Nucl Med 2021; 46:156-158. [PMID: 33315683 DOI: 10.1097/rlu.0000000000003453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
ABSTRACT A 38-year-old woman presented for 18F-FDG PET/CT after multiple intra-abdominal surgical resections of a rare recurrent perivascular epithelioid cell tumor of the gastrointestinal tract. A solitary pelvic metastasis was detected, but surprisingly exhibited neither increased glucose consumption nor contrast enhancement on CT. Follow-up 18F-FDG PET/CT staging in the further disease course revealed multiple abdominal metastases, now, however, with markedly increased 18F-FDG uptake and intraoperatively correlating widespread peritoneal sarcomatosis. This case gives preliminary insight into monitoring of disease progression in metastatic perivascular epithelioid cell tumor, although the underlying pathophysiological bases for varying 18F-FDG uptake in PET/CT are not yet fully understood.
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Affiliation(s)
| | | | | | | | - Lars H Lindner
- Internal Medicine III, University Hospital, LMU Munich, Munich, Germany
| | - Dorit Di Gioia
- Internal Medicine III, University Hospital, LMU Munich, Munich, Germany
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Geyer T, Rübenthaler J, Marschner C, von Hake M, Fabritius MP, Froelich MF, Huber T, Nörenberg D, Rückel J, Weniger M, Martens C, Sabel L, Clevert DA, Schwarze V. Structured Reporting Using CEUS LI-RADS for the Diagnosis of Hepatocellular Carcinoma (HCC)-Impact and Advantages on Report Integrity, Quality and Interdisciplinary Communication. Cancers (Basel) 2021; 13:cancers13030534. [PMID: 33572502 PMCID: PMC7866827 DOI: 10.3390/cancers13030534] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 01/28/2021] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Contrast-enhanced ultrasound (CEUS) is an increasingly accepted imaging modality for visualizing hepatocellular carcinoma (HCC) and is recommended as a secondary imaging option by most leading hepatology societies. In recent years, the use of structured reporting (SR) has been recommended by several societies to standardize report content and improve report quality of various diagnostic modalities when compared to conventional free-text reports (FTR). Our single-center study aimed to evaluate the use of SR using a CEUS LI-RADS software template in CEUS examinations of 50 HCC patients. SR significantly increased report integrity, satisfaction of the referring physicians, linguistic quality and overall report quality compared to FTR. Therefore, the use of SR in CEUS examinations of HCC patients may represent a valuable tool to facilitate clinical decision-making and improve interdisciplinary communication in the future. Abstract Background: Our retrospective single-center study aims to evaluate the impact of structured reporting (SR) using a CEUS LI-RADS template on report quality compared to conventional free-text reporting (FTR) in contrast-enhanced ultrasound (CEUS) for the diagnosis of hepatocellular carcinoma (HCC). Methods: We included 50 patients who underwent CEUS for HCC staging. FTR created after these examinations were compared to SR retrospectively generated by using template-based online software with clickable decision trees. The reports were evaluated regarding report completeness, information extraction, linguistic quality and overall report quality by two readers specialized in internal medicine and visceral surgery. Results: SR significantly increased report completeness with at least one key feature missing in 31% of FTR vs. 2% of SR (p < 0.001). Information extraction was considered easy in 98% of SR vs. 86% of FTR (p = 0.004). The trust of referring physicians in the report was significantly increased by SR with a mean of 5.68 for SR vs. 4.96 for FTR (p < 0.001). SR received significantly higher ratings regarding linguistic quality (5.79 for SR vs. 4.83 for FTR (p < 0.001)) and overall report quality (5.75 for SR vs. 5.01 for FTR (p < 0.001)). Conclusions: Using SR instead of conventional FTR increases the overall quality of reports in CEUS examinations of HCC patients and may represent a valuable tool to facilitate clinical decision-making and improve interdisciplinary communication in the future.
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Affiliation(s)
- Thomas Geyer
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
- Correspondence: ; Tel.: +49-894-4007-3620
| | - Johannes Rübenthaler
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
| | - Constantin Marschner
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
| | - Malte von Hake
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
| | - Matthias F. Froelich
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, 68167 Mannheim, Germany; (M.F.F.); (T.H.); (D.N.)
| | - Thomas Huber
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, 68167 Mannheim, Germany; (M.F.F.); (T.H.); (D.N.)
| | - Dominik Nörenberg
- Department of Radiology and Nuclear Medicine, University Medical Center Mannheim, 68167 Mannheim, Germany; (M.F.F.); (T.H.); (D.N.)
| | - Johannes Rückel
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
| | - Maximilian Weniger
- Department of General, Visceral, and Transplantation Surgery, University Hospital, LMU Munich, 81377 Munich, Germany;
| | - Corinna Martens
- Department of Medicine II, University Hospital, LMU Munich, 81377 Munich, Germany;
| | - Laura Sabel
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
| | - Dirk-André Clevert
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
| | - Vincent Schwarze
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (J.R.); (C.M.); (M.v.H.); (M.P.F.); (J.R.); (L.S.); (D.-A.C.); (V.S.)
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Fabritius MP, Hartmann F, Seidensticker R, Pech M, Powerski M, Grosu S, Maurus S, Todica A, Ilhan H, Omari J, Damm R, GROßER O, Albers J, Ricke J, Seidensticker M. Liver Function Changes After Technetium-99m-Macroaggregated Albumin Administration and Their Predictive Value Regarding Hepatotoxicity in Patients Undergoing Yttrium-90-Radioembolization. Anticancer Res 2021; 41:437-444. [PMID: 33419841 DOI: 10.21873/anticanres.14793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 11/22/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Intraarterial Technetium-99m-Macroaggregated Albumin (99mTc-MAA) administration is an established method to predict particle distribution prior to radioembolization. This study aimed to analyse the impact of intraarterial administration of 99mTc-MAA on changes in liver-specific laboratory parameters and to assess whether such changes are associated with post-radioembolization hepatotoxicity. PATIENTS AND METHODS A total of 202 patients treated with radioembolization received prior mapping angiography with 99mTc-MAA administration. All patients underwent clinical and laboratory examinations, including liver-specific parameters at certain times before and after mapping angiography/99mTc-MAA administration, as well as before radioembolization and during follow-up. RESULTS Bilirubin increased temporarily after 99mTc-MAA administration (p<0.001), but was not clinically relevant, and returned close to the initial value before radioembolization. These changes showed no association with subsequent postradioembolic hepatotoxicity or shortened overall survival. CONCLUSION 99mTc-MAA administration results in a significant, however, not clinically relevant transient increase in bilirubin levels, which does not provide a predictive value for subsequent radioembolization outcome or postradioembolic hepatotoxicity.
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Affiliation(s)
| | - Fabian Hartmann
- Otto-von-Guericke Universitätsklinikum, Klinik für Radiologie und Nuklearmedizin, Magdeburg, Magdeburg, Germany
| | | | - Maciej Pech
- Otto-von-Guericke Universitätsklinikum, Klinik für Radiologie und Nuklearmedizin, Magdeburg, Magdeburg, Germany
| | - Maciej Powerski
- Otto-von-Guericke Universitätsklinikum, Klinik für Radiologie und Nuklearmedizin, Magdeburg, Magdeburg, Germany
| | - Sergio Grosu
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Stefan Maurus
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Andrei Todica
- Department of Nuclear Medicine, University Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Harun Ilhan
- Department of Nuclear Medicine, University Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Jazan Omari
- Otto-von-Guericke Universitätsklinikum, Klinik für Radiologie und Nuklearmedizin, Magdeburg, Magdeburg, Germany
| | - Robert Damm
- Otto-von-Guericke Universitätsklinikum, Klinik für Radiologie und Nuklearmedizin, Magdeburg, Magdeburg, Germany
| | - Oliver GROßER
- Otto-von-Guericke Universitätsklinikum, Klinik für Radiologie und Nuklearmedizin, Magdeburg, Magdeburg, Germany
| | | | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany;
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Ahmaddy F, Burgard C, Beyer L, Koehler VF, Bartenstein P, Fabritius MP, Geyer T, Wenter V, Ilhan H, Spitzweg C, Todica A. 18F-FDG-PET/CT in Patients with Advanced, Radioiodine Refractory Thyroid Cancer Treated with Lenvatinib. Cancers (Basel) 2021; 13:cancers13020317. [PMID: 33467085 PMCID: PMC7830971 DOI: 10.3390/cancers13020317] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 01/04/2023] Open
Abstract
Simple Summary In patients with advanced radioiodine refractory differentiated thyroid carcinoma (DTC), therapeutic options are limited. In the “Study of (E7080) Lenvatinib in Differentiated Cancer of the Thyroid (SELECT)”, Lenvatinib significantly prolonged the progression-free survival, resulting in a more frequent use in clinical practice for this patient group. Due to considerable side effects, an accurate assessment of response to treatment is crucial in these patients. Therefore, we aimed to improve treatment individualization and reduce unnecessary therapies by selecting patients who will most likely benefit from Lenvatinib treatment using 2-deoxy-2-[18F] fluoro-D-glucose positron-emission-tomography/computed-tomography. Abstract Background: The tyrosine kinase inhibitor (TKI) Lenvatinib represents one of the most effective therapeutic options in patients with advanced radioiodine refractory differentiated thyroid carcinoma (DTC). We aimed to assess the role of 2-deoxy-2-[18F] fluoro-D-glucose positron-emission-tomography/computed-tomography (18F-FDG-PET/CT) in the monitoring of functional tumor response compared to morphological response. Methods: In 22 patients, a modified Positron Emission Tomography Response Criteria In Solid Tumors (mPERCIST) evaluation before treatment with Lenvatinib and at 3 and 6 month follow up was performed. Further PET-parameters and morphologic tumor response using Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 were assessed and their prediction of progression-free survival (PFS) and disease-specific survival (DSS) was evaluated. Results: Most patients were rated stable in morphological evaluation and progressive using a metabolic response. All patients who responded to therapy through RECIST showed a decline in nearly all Positron Emission Tomography (PET)-parameters. For both time-points, non-responders according to mPERCIST showed significantly lower median PFS and DSS, whereas according to RECIST, only DSS was significantly lower. Conclusion: Tumor response assessment by 18F-FDG-PET outperforms morphological response assessment by CT in patients with advanced radioiodine refractory DTC treated with Lenvatinib, which seems to be correlated with clinical outcomes.
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Affiliation(s)
- Freba Ahmaddy
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.A.); (C.B.); (L.B.); (P.B.); (V.W.); (H.I.)
| | - Caroline Burgard
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.A.); (C.B.); (L.B.); (P.B.); (V.W.); (H.I.)
| | - Leonie Beyer
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.A.); (C.B.); (L.B.); (P.B.); (V.W.); (H.I.)
| | - Viktoria Florentine Koehler
- Department of Internal Medicine IV, University Hospital, LMU Munich, 81377 Munich, Germany; (V.F.K.); (C.S.)
| | - Peter Bartenstein
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.A.); (C.B.); (L.B.); (P.B.); (V.W.); (H.I.)
- Comprehensive Cancer Center (CCC LMU), University Hospital, LMU Munich, 81377 Munich, Germany
- Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany
| | - Matthias P. Fabritius
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (T.G.)
| | - Thomas Geyer
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.P.F.); (T.G.)
| | - Vera Wenter
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.A.); (C.B.); (L.B.); (P.B.); (V.W.); (H.I.)
| | - Harun Ilhan
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.A.); (C.B.); (L.B.); (P.B.); (V.W.); (H.I.)
- Comprehensive Cancer Center (CCC LMU), University Hospital, LMU Munich, 81377 Munich, Germany
- Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany
| | - Christine Spitzweg
- Department of Internal Medicine IV, University Hospital, LMU Munich, 81377 Munich, Germany; (V.F.K.); (C.S.)
- Comprehensive Cancer Center (CCC LMU), University Hospital, LMU Munich, 81377 Munich, Germany
- Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany
| | - Andrei Todica
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany; (F.A.); (C.B.); (L.B.); (P.B.); (V.W.); (H.I.)
- Comprehensive Cancer Center (CCC LMU), University Hospital, LMU Munich, 81377 Munich, Germany
- Interdisciplinary Center for Thyroid Carcinoma (ISKUM), University Hospital, LMU Munich, 81377 Munich, Germany
- Correspondence: ; Tel.: +49-89-4400-74653
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Rueckel J, Reidler P, Fink N, Sperl J, Geyer T, Fabritius MP, Ricke J, Ingrisch M, Sabel BO. Artificial intelligence assistance improves reporting efficiency of thoracic aortic aneurysm CT follow-up. Eur J Radiol 2020; 134:109424. [PMID: 33259990 DOI: 10.1016/j.ejrad.2020.109424] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 10/29/2020] [Accepted: 11/14/2020] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Follow-up of aortic aneurysms by computed tomography (CT) is crucial to balance the risks of treatment and rupture. Artificial intelligence (AI)-assisted radiology reporting promises time savings and reduced inter-reader variabilities. METHODS The influence of AI assistance on the efficiency and accuracy of aortic aneurysm reporting according to the AHA / ESC guidelines was quantified based on 324 AI measurements and 1944 radiological measurements: 18 aortic aneurysm patients, each with two CT scans (arterial contrast phase, electrocardiogram-gated) with an interval of at least six months have been included. One board-certified radiologist and two residents (8/4/2 years of experience in vascular imaging) independently assessed aortic diameters at nine landmark positions. Aneurysm extensions were compared with original CT reports. After three weeks washout period, CTs were re-assessed, based on graphically illustrated AI measurements. RESULTS Time-consuming guideline-compliant aortic measurements revealed additional affections of the root / arch for 80 % of aneurysms that had initially been reported to be limited to the ascending aorta. AI assistance reduced mean reporting time by 63 % from 13:01 to 04:46 min including manual corrections of AI measurements (performed for 33.6 % of all measurements with predominance at the sinuses of Vasalva). AI assistance reduced total diameter inter-reader variability by 42.5 % (0.42 / 1.16 mm with / without AI assistance, mean of all patients and landmark positions, significant reduction for 6 out of 9 measuring positions). Conventional and AI-assisted quantification aneurysm progress varied to small extent (mean of 0.75 mm over all patients / landmark positions) not significantly exceeding radiologist's inter-reader variabilities. CONCLUSIONS Guideline-compliant aorta measurement is crucial to report detailed aneurysm extension which might affect the strategy of interventional repair. AI assistance promises improved reporting efficiency and has high potential to reduce radiologist's inter-reader variabilities that can hamper diagnostic follow-up accuracy. KEY POINT The time-consuming guideline-compliant aorta aneurysm assessment is crucial to report aneurysm extension in detail; AI-assisted measurement reduces reporting time, improves extension evaluation and reduces inter-reader variability.
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Affiliation(s)
- J Rueckel
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany.
| | - P Reidler
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - N Fink
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany; Comprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL), Munich, Germany
| | - J Sperl
- Siemens Healthineers AG, Erlangen, Germany
| | - T Geyer
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - M P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - J Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - M Ingrisch
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - B O Sabel
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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Unterrainer M, Ruzicka M, Fabritius MP, Mittlmeier LM, Winkelmann M, Rübenthaler J, Brendel M, Subklewe M, von Bergwelt-Baildon M, Ricke J, Kunz WG, Cyran CC. PET/CT imaging for tumour response assessment to immunotherapy: current status and future directions. Eur Radiol Exp 2020; 4:63. [PMID: 33200246 PMCID: PMC7669926 DOI: 10.1186/s41747-020-00190-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 10/13/2020] [Indexed: 12/14/2022] Open
Abstract
Recent immunotherapeutic approaches have evolved as powerful treatment options with high anti-tumour responses involving the patient's own immune system. Passive immunotherapy applies agents that enhance existing anti-tumour responses, such as antibodies against immune checkpoints. Active immunotherapy uses agents that direct the immune system to attack tumour cells by targeting tumour antigens. Active cellular-based therapies are on the rise, most notably chimeric antigen receptor T cell therapy, which redirects patient-derived T cells against tumour antigens. Approved treatments are available for a variety of solid malignancies including melanoma, lung cancer and haematologic diseases. These novel immune-related therapeutic approaches can be accompanied by new patterns of response and progression and immune-related side-effects that challenge established imaging-based response assessment criteria, such as Response Evaluation Criteria in Solid tumours (RECIST) 1.1. Hence, new criteria have been developed. Beyond morphological information of computed tomography (CT) and magnetic resonance imaging, positron emission tomography (PET) emerges as a comprehensive imaging modality by assessing (patho-)physiological processes such as glucose metabolism, which enables more comprehensive response assessment in oncological patients. We review the current concepts of response assessment to immunotherapy with particular emphasis on hybrid imaging with 18F-FDG-PET/CT and aims at describing future trends of immunotherapy and additional aspects of molecular imaging within the field of immunotherapy.
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Affiliation(s)
- Marcus Unterrainer
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
| | - Michael Ruzicka
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lena M Mittlmeier
- Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Michael Winkelmann
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Johannes Rübenthaler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias Brendel
- Department of Nuclear Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Marion Subklewe
- Department of Medicine III, University Hospital, LMU Munich, Munich, Germany
| | | | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Wolfgang G Kunz
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Clemens C Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- DIE RADIOLOGIE, Munich, Germany
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Holzgreve A, Fabritius MP, Conter P. CT Findings in Negative Pressure Pulmonary Edema. Diagnostics (Basel) 2020; 10:diagnostics10100749. [PMID: 32992752 PMCID: PMC7599785 DOI: 10.3390/diagnostics10100749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/10/2020] [Accepted: 09/23/2020] [Indexed: 01/23/2023] Open
Abstract
Negative pressure pulmonary edema (NPPE) is a rare, potentially life-threatening, and yet diagnostically challenging perioperative complication. Most cases of NPPE occur in the context of anesthetic procedures, mainly caused by upper airway obstruction, and are diagnosed during the recovery period. We present a case of fulminant NPPE in a patient during general anesthesia which illustrates the eye-catching CT findings that can occur in NPPE and eventually support diagnosis. With regard to the current pandemic, we include a discussion of the typical imaging patterns of COVID-19 as a radiological differential diagnosis of NPPE. A 42-year old male patient presented with sudden respiratory insufficiency during arthroscopic knee lavage and subsequently required highly invasive ventilation therapy and catecholamine administration. Postoperative CT imaging of the thorax exhibited extensive, centrally accentuated consolidations with surrounding ground-glass opacity in all lung lobes, suggestive of pulmonary edema. In view of the clinical course and the imaging findings, a negative pressure pulmonary edema (NPPE) was diagnosed.
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Affiliation(s)
- Adrien Holzgreve
- Department of Nuclear Medicine, University Hospital, LMU Munich, 81377 Munich, Germany
- Correspondence: ; Tel.: +49-89-4400-74646
| | | | - Philippe Conter
- Department of Anesthesiology, University Hospital, LMU Munich, 81377 Munich, Germany;
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Reidler P, Stueckelschweiger L, Puhr-Westerheide D, Feil K, Kellert L, Dimitriadis K, Tiedt S, Herzberg M, Rémi J, Liebig T, Fabritius MP, Kunz WG. Performance of Automated Attenuation Measurements at Identifying Large Vessel Occlusion Stroke on CT Angiography. Clin Neuroradiol 2020; 31:763-772. [PMID: 32939563 PMCID: PMC8463515 DOI: 10.1007/s00062-020-00956-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 08/17/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE Computed tomography angiography (CTA) is routinely used to detect large-vessel occlusion (LVO) in patients with suspected acute ischemic stroke; however, visual analysis is time consuming and prone to error. To evaluate solutions to support imaging triage, we tested performance of automated analysis of CTA source images (CTASI) at identifying patients with LVO. METHODS Stroke patients with LVO were selected from a prospectively acquired cohort. A control group was selected from consecutive patients with clinically suspected stroke without signs of ischemia on CT perfusion (CTP) or infarct on follow-up. Software-based automated segmentation and Hounsfield unit (HU) measurements were performed on CTASI for all regions of the Alberta Stroke Program Early CT score (ASPECTS). We derived different parameters from raw measurements and analyzed their performance to identify patients with LVO using receiver operating characteristic curve analysis. RESULTS The retrospective analysis included 145 patients, 79 patients with LVO stroke and 66 patients without stroke. The parameters hemispheric asymmetry ratio (AR), ratio between highest and lowest regional AR and M2-territory AR produced area under the curve (AUC) values from 0.95-0.97 (all p < 0.001) for detecting presence of LVO in the total population. Resulting sensitivity (sens)/specificity (spec) defined by the Youden index were 0.87/0.97-0.99. Maximum sens/spec defined by the specificity threshold ≥0.70 were 0.91-0.96/0.77-0.83. Performance in a small number of patients with isolated M2 occlusion was lower (AUC: 0.72-0.85). CONCLUSION Automated attenuation measurements on CTASI identify proximal LVO stroke patients with high sensitivity and specificity. This technique can aid in accurate and timely patient selection for thrombectomy, especially in primary stroke centers without CTP capacity.
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Affiliation(s)
- Paul Reidler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
| | - Lena Stueckelschweiger
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Daniel Puhr-Westerheide
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Katharina Feil
- Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- German Center for Vertigo and Balance Disorders, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Lars Kellert
- Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Konstantinos Dimitriadis
- Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
- Institute for Stroke and Dementia Research, LMU Munich, Feodor-Lynen-Str. 17, 81377, Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research, LMU Munich, Feodor-Lynen-Str. 17, 81377, Munich, Germany
| | - Moriz Herzberg
- Department of Neuroradiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Jan Rémi
- Department of Neurology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Thomas Liebig
- Department of Neuroradiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Wolfgang G Kunz
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
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41
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Reidler P, Puhr-Westerheide D, Rotkopf L, Fabritius MP, Feil K, Kellert L, Tiedt S, Rémi J, Liebig T, Kunz WG. Cerebral attenuation on single-phase CT angiography source images: Automated ischemia detection and morphologic outcome prediction after thrombectomy in patients with ischemic stroke. PLoS One 2020; 15:e0236956. [PMID: 32790766 PMCID: PMC7425881 DOI: 10.1371/journal.pone.0236956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/16/2020] [Indexed: 11/26/2022] Open
Abstract
Objectives Stroke triage using CT perfusion (CTP) or MRI gained importance after successful application in recent trials on late-window thrombectomy but is often unavailable and time-consuming. We tested the clinical value of software-based analysis of cerebral attenuation on Single-phase CT angiography source images (CTASI) as CTP surrogate in stroke patients. Methods Software-based automated segmentation and Hounsfield unit (HU) measurements for all regions of the Alberta Stroke Program Early CT Score (ASPECTS) on CTASI were performed in patients with large vessel occlusion stroke who underwent thrombectomy. To normalize values, we calculated relative HU (rHU) as ratio of affected to unaffected hemisphere. Ischemic regions, regional ischemic core and final infarction were determined on simultaneously acquired CTP and follow-up imaging as ground truth. Receiver operating characteristics analysis was performed to calculate the area-under-the-curve (AUC). Resulting cut-off values were used for comparison with visual analysis and to calculate an 11-point automated CTASI ASPECTS. Results Seventy-nine patients were included. rHU values enabled significant classification of ischemic involvement on CTP in all ten regions of the ASPECTS (each p<0.001, except M4-cortex p = 0.002). Classification of ischemic core and prediction of final infarction had best results in subcortical regions but produced lower AUC values with significant classification for all regions except M1, M3 and M5. Relative total hemispheric attenuation provided strong linear correlation with CTP total ischemic volume. Automated classification of regional ischemia on CTASI was significantly more accurate in most regions and provided better agreement with CTP cerebral blood flow ASPECTS than visual assessment. Conclusions Automated attenuation measurements on CTASI provide excellent performance in detecting acute ischemia as identified on CTP with improved accuracy compared to visual analysis. However, value for the approximation of ischemic core and morphologic outcome in large vessel occlusion stroke after thrombectomy was regionally dependent and limited. This technique has the potential to facilitate stroke imaging as sensitive surrogate for CTP-based ischemia.
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Affiliation(s)
- Paul Reidler
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
- * E-mail:
| | | | - Lukas Rotkopf
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Katharina Feil
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
- German Center for Vertigo and Balance Disorders, LMU Munich, Munich, Germany
| | - Lars Kellert
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research, LMU Munich, Munich, Germany
| | - Jan Rémi
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Thomas Liebig
- Department of Neuroradiology, University Hospital, LMU Munich, Munich, Germany
| | - Wolfgang G. Kunz
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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Reidler P, Mueller F, Stueckelschweiger L, Feil K, Kellert L, Fabritius MP, Liebig T, Tiedt S, Puhr-Westerheide D, Kunz WG. Diaschisis revisited: quantitative evaluation of thalamic hypoperfusion in anterior circulation stroke. Neuroimage Clin 2020; 27:102329. [PMID: 32629166 PMCID: PMC7334597 DOI: 10.1016/j.nicl.2020.102329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 06/02/2020] [Accepted: 06/21/2020] [Indexed: 11/21/2022]
Abstract
CT perfusion reveals thalamic hypoperfusion in acute anterior circulation stroke. This indirect phenomenon is referred to as ipsilateral thalamic diaschisis (ITD). Quantitative analysis indicates that ITD is a non-binary phenomenon. ITD is associated with lesion extent and involvement of the lentiform nucleus. Stroke outcome was not associated with ITD parameters.
Purpose Ipsilateral thalamic diaschisis (ITD) refers to the phenomenon of thalamic hypoperfusion or hypometabolism due to a distant cerebral injury. To further investigate the characteristics and spectrum of ITD, we analyzed quantitative measurements of thalamic hypoperfusion in acute anterior circulation stroke. Methods We selected consecutive patients with large-vessel occlusion (LVO) anterior circulation stroke and available CT perfusion (CTP) examination on admission who underwent endovascular thrombectomy. Thalamic perfusion parameters on CTP were tested between ipsi- and contralesional thalamus and ischemic territory. Values were compared with thresholds from CTP analysis software. Associations of thalamic perfusion parameters with acute imaging and clinical data were determined in uni- and multivariate logistic regression analyses. Results Ninety-nine patients were included. All perfusion parameters indicated significant non-ischemic hypoperfusion of the thalamus, not reaching the levels of ischemia in the middle cerebral artery territory due to LVO (all p < 0.002). Multiple perfusion parameters exhibited significant association with ischemic lesion extent (relative cerebral blood flow [CBF]: β = − 0.23, p = 0.022; Δtime to drain: β = 0.33, p < 0.001; ΔTmax: β = − 0.36, p < 0.001) and involvement of the Lentiform Nucleus (Δmean transit time: β = 0.64, p = 0.04; Δtime to drain: β = 0.81, p = 0.01; ΔTmax: β = − 0.82, p = 0.01). Symptom severity on admission exhibited minor significant association with reduction of thalamic CBF in uncorrected analysis (Odds ratio: 0.05, p = 0.049), but short- and long-term outcomes were unaffected by perfusion status. ITD reached guideline-based software-threshold levels in only one patient. Conclusions ITD in acute stroke is a non-binary phenomenon affected by lesion extent and involvement of the lentiform nucleus. We found uncorrected association of ITD with early clinical presentation, but no association with short- or long-term outcome was evident. Relevant misclassification of ITD by guideline-based CTP software was not indicated, which needs further dedicated testing.
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Affiliation(s)
- Paul Reidler
- Department of Radiology, University Hospital, LMU Munich, Germany
| | | | | | - Katharina Feil
- Department of Neurology, University Hospital, LMU Munich, Germany
| | - Lars Kellert
- Department of Neurology, University Hospital, LMU Munich, Germany
| | | | - Thomas Liebig
- Department of Neuroradiology, University Hospital, LMU Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research, LMU Munich, Germany
| | | | - Wolfgang G Kunz
- Department of Radiology, University Hospital, LMU Munich, Germany.
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Fabritius MP, Reidler P, Froelich MF, Rotkopf LT, Liebig T, Kellert L, Feil K, Tiedt S, Kazmierczak PM, Thierfelder KM, Puhr-Westerheide D, Kunz WG. Incremental Value of Computed Tomography Perfusion for Final Infarct Prediction in Acute Ischemic Cerebellar Stroke. J Am Heart Assoc 2019; 8:e013069. [PMID: 31631729 PMCID: PMC6898835 DOI: 10.1161/jaha.119.013069] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background The diagnosis of ischemic cerebellar stroke is challenging because of nonspecific symptoms and very limited accuracy of commonly applied computed tomography (CT) imaging. Advances in CT perfusion imaging provide increasing value in the detection of posterior circulation stroke, but the prognostic value remains unclear. We aimed to identify imaging parameters that predict morphologic outcome in cerebellar stroke patients using advanced CT including whole‐brain CT perfusion (WB‐CTP). Methods and Results We selected all subjects with cerebellar WB‐CTP perfusion deficits and follow‐up‐confirmed cerebellar infarction from a consecutive cohort with suspected stroke who underwent WB‐CTP. Posterior‐circulation‐Acute‐Stroke‐Prognosis‐Early‐CT‐Score (pc‐ASPECTS) was determined on noncontrast CT, CT angiography source images, and on parametric WB‐CTP maps. Cerebellar perfusion deficit volumes on all maps and the final infarction volume on follow‐up imaging were quantified. Uni‐ and multivariate regression analyses were performed. Sixty patients fulfilled the inclusion criteria. pc‐ASPECTS on CT angiography source images (ß, −9.239; 95% CI, −14.220 to −4.259; P<0.001) and cerebral blood flow deficit volume (ß, 0.886; 95% CI, 0.684 to 1.089; P<0.001) were significantly associated with final infarction volume in univariate linear regression analysis. The association of cerebral blood flow deficit volume (ß, 0.830; 95% CI, 0.605–1.055; P<0.001) was confirmed in a multivariate linear regression model adjusted for age, sex, pc‐ASPECTS on noncontrast CT, and CT angiography source images and the National Institutes of Health Stroke Scale score on admission. No other clinical or imaging parameters were associated with cerebellar stroke final infarction volume (P>0.05). Conclusions In contrast to noncontrast CT and CT angiography, WB‐CTP imaging contains prognostic information for morphologic outcome in patients with acute cerebellar stroke.
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Affiliation(s)
| | - Paul Reidler
- Department ot Radiology University Hospital, LMU Munich Munich Germany
| | | | - Lukas T Rotkopf
- Department ot Radiology University Hospital, LMU Munich Munich Germany
| | - Thomas Liebig
- Department of Neuroradiology University Hospital LMU Munich Germany
| | - Lars Kellert
- Department of Neurology University Hospital LMU Munich Germany.,Department of Neurology University Hospital Heidelberg Germany
| | - Katharina Feil
- Department of Neurology University Hospital LMU Munich Germany.,German Center for Vertigo and Balance Disorders University Hospital LMU Munich Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research University Hospital LMU Munich Germany
| | | | - Kolja M Thierfelder
- Institute of Diagnostic and Interventional Radiology Pediatric Radiology and Neuroradiology University Medical Center Rostock Germany
| | | | - Wolfgang G Kunz
- Department ot Radiology University Hospital, LMU Munich Munich Germany
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Puhr-Westerheide D, Tiedt S, Rotkopf LT, Herzberg M, Reidler P, Fabritius MP, Kazmierczak PM, Kellert L, Feil K, Thierfelder KM, Dorn F, Liebig T, Wollenweber FA, Kunz WG. Clinical and Imaging Parameters Associated With Hyperacute Infarction Growth in Large Vessel Occlusion Stroke. Stroke 2019; 50:2799-2804. [DOI: 10.1161/strokeaha.119.025809] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background and Purpose—
Large vessel occlusion stroke leads to highly variable hyperacute infarction growth. Our aim was to identify clinical and imaging parameters associated with hyperacute infarction growth in patients with an large vessel occlusion stroke of the anterior circulation.
Methods—
Seven hundred twenty-two consecutive patients with acute stroke were prospectively included in our monocentric stroke registry between 2009 and 2017. We selected all patients with a large vessel occlusion stroke of the anterior circulation, documented times from symptom onset, and CT perfusion on admission for our analysis (N=178). Ischemic core volume was determined with CT perfusion using automated thresholds. Hyperacute infarction growth was defined as ischemic core volume divided by times from symptom onset, assuming linear progression during times from symptom onset to imaging on admission. For collateral assessment, the regional leptomeningeal collateral score (rLMC) was used. Clinical data included the National Institutes of Health Stroke Scale score on admission and cardiovascular risk factors. Regression analysis was performed to adjust for confounders.
Results—
Median ischemic core volume was 34.4 mL, and median hyperacute infarction growth was 0.27 mL/min. In regression analysis including age, sex, National Institutes of Health Stroke Scale, clot burden score, diabetes mellitus, smoking, hypercholesteremia, hypertension, Alberta Stroke Program Early CT Score, and rLMC scores, only the rLMC score had a significant, independent association with hyperacute infarction growth (adjusted β=−0.35;
P
<0.001). Trichotomizing patients by rLMC scores yielded 65 patients with good (rLMC >15), 67 with intermediate (rLMC 11–15) and 46 with poor collaterals (rLMC <11) with an infarction growth of 0.17 mL/min, 0.26 mL/min, and 0.41 mL/min, respectively.
Conclusions—
Hyperacute infarction growth strongly depends on collaterals. In primary stroke centers, hyperacute infarction growth may be extrapolated to estimate the stroke progression during transfer times to thrombectomy centers and to support decisions on which patients to transfer.
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Affiliation(s)
- Daniel Puhr-Westerheide
- From the Department of Radiology (D.P.-W., L.T.R., P.R., M.P.F., P.M.K., W.G.K.), University Hospital, LMU Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research (S.T., F.A.W.), University Hospital, LMU Munich, Germany
| | - Lukas T. Rotkopf
- From the Department of Radiology (D.P.-W., L.T.R., P.R., M.P.F., P.M.K., W.G.K.), University Hospital, LMU Munich, Germany
| | - Moriz Herzberg
- Department of Neuroradiology (M.H., F.D., T.L.), University Hospital, LMU Munich, Germany
| | - Paul Reidler
- From the Department of Radiology (D.P.-W., L.T.R., P.R., M.P.F., P.M.K., W.G.K.), University Hospital, LMU Munich, Germany
| | - Matthias P. Fabritius
- From the Department of Radiology (D.P.-W., L.T.R., P.R., M.P.F., P.M.K., W.G.K.), University Hospital, LMU Munich, Germany
| | - Philipp M. Kazmierczak
- From the Department of Radiology (D.P.-W., L.T.R., P.R., M.P.F., P.M.K., W.G.K.), University Hospital, LMU Munich, Germany
| | - Lars Kellert
- Department of Neurology (L.K., K.F., F.A.W.), LMU Munich, Germany
| | - Katharina Feil
- Department of Neurology (L.K., K.F., F.A.W.), LMU Munich, Germany
- German Center for Vertigo and Balance Disorders (K.F.), LMU Munich, Germany
| | - Kolja M. Thierfelder
- Department of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Center Rostock, Germany (K.M.T.)
| | - Franziska Dorn
- Department of Neuroradiology (M.H., F.D., T.L.), University Hospital, LMU Munich, Germany
| | - Thomas Liebig
- Department of Neuroradiology (M.H., F.D., T.L.), University Hospital, LMU Munich, Germany
| | - Frank A. Wollenweber
- Institute for Stroke and Dementia Research (S.T., F.A.W.), University Hospital, LMU Munich, Germany
- Department of Neurology (L.K., K.F., F.A.W.), LMU Munich, Germany
| | - Wolfgang G. Kunz
- From the Department of Radiology (D.P.-W., L.T.R., P.R., M.P.F., P.M.K., W.G.K.), University Hospital, LMU Munich, Germany
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Schuler F, Rotkopf LT, Apel D, Fabritius MP, Tiedt S, Wollenweber FA, Kellert L, Dorn F, Liebig T, Thierfelder KM, Kunz WG. Differential Benefit of Collaterals for Stroke Patients Treated with Thrombolysis or Supportive Care : A Propensity Score Matched Analysis. Clin Neuroradiol 2019; 30:525-533. [PMID: 31375893 DOI: 10.1007/s00062-019-00815-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 07/05/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE Leptomeningeal collaterals can slow down infarction growth; however, despite good collaterals in the DAWN and DEFUSE 3 trials, outcomes were devastating if reperfusion was not attempted. The aim of this study was to compare the influence of collaterals on morphological and functional outcome in patients with acute middle cerebral artery (MCA) stroke undergoing intravenous thrombolysis (IVT) vs. supportive care (non-IVT). METHODS Out of 1639 consecutive patients examined with multiparametric computed tomography (CT) for suspected ischemic stroke, all patients with confirmed MCA stroke who did not undergo endovascular thrombectomy were selected. Propensity score matching (PSM) was used to match IVT and non-IVT treated patients for potential confounders including age, sex, National Institutes of Health Stroke Scale (NIHSS) score on admission, Alberta Stroke Program Early CT Score (ASPECTS), and occlusion site. Regression analysis after PSM was performed to identify independent associations. RESULTS After PSM, 90 IVT patients were matched with 90 non-IVT patients. In multivariable regression analysis, a high regional leptomeningeal collateral (rLMC) score was independently associated with lower final infarction volume (FIV) in the IVT group (b = -0.472, p < 0.001) but not in the non-IVT group (b = -0.116, p = 0.327). The trichotomized rLMC scores predicted functional outcome in IVT treated patients (adjusted odds ratio, aOR = 4.57, 95% confidence interval, CI, 1.03-20.32, p = 0.046) but showed no independent association with outcome in the non-IVT group (aOR = 0.69, 95% CI 0.07-6.80, p = 0.753). CONCLUSION Good collaterals favored smaller FIV and good functional outcome in IVT treated patients but not in non-IVT treated patients. Good collateral flow may have limited prognostic value if IVT is not administered to attempt reperfusion.
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Affiliation(s)
- Felix Schuler
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
| | - Lukas T Rotkopf
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Daniel Apel
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Matthias P Fabritius
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Steffen Tiedt
- Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Munich, Germany
| | - Frank A Wollenweber
- Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Munich, Germany
| | - Lars Kellert
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Franziska Dorn
- Institute of Diagnostic and Interventional Neuroradiology, University Hospital, LMU Munich, Munich, Germany
| | - Thomas Liebig
- Institute of Diagnostic and Interventional Neuroradiology, University Hospital, LMU Munich, Munich, Germany
| | - Kolja M Thierfelder
- Institute for Diagnostic and Interventional Radiology, University Medical Center Rostock, Rostock, Germany
| | - Wolfgang G Kunz
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
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Reidler P, Thierfelder KM, Rotkopf LT, Fabritius MP, Puhr-Westerheide D, Dorn F, Forkert ND, Kemmling A, Kunz WG. Attenuation Changes in ASPECTS Regions: A Surrogate for CT Perfusion–based Ischemic Core in Acute Ischemic Stroke. Radiology 2019; 291:451-458. [DOI: 10.1148/radiol.2019182041] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kunz WG, Fabritius MP, Sommer WH, Höhne C, Scheffler P, Rotkopf LT, Fendler WP, Sabel BO, Meinel FG, Dorn F, Ertl-Wagner B, Reiser MF, Thierfelder KM. Effect of stroke thrombolysis predicted by distal vessel occlusion detection. Neurology 2018; 90:e1742-e1750. [PMID: 29678936 DOI: 10.1212/wnl.0000000000005519] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 02/26/2018] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Among ischemic stroke patients with negative CT angiography (CTA), we aimed to determine the predictive value of enhanced distal vessel occlusion detection using CT perfusion postprocessing (waveletCTA) for the treatment effect of IV thrombolysis (IVT). METHODS Patients were selected from 1,851 consecutive patients who had undergone CT perfusion. Inclusion criteria were (1) significant cerebral blood flow (CBF) deficit, (2) no occlusion on CTA, and (3) infarction confirmed on follow-up. Favorable morphologic response was defined as smaller values of final infarction volume divided by initial CBF deficit volume (FIV/CBF). Favorable functional outcome was defined as modified Rankin Scale score of ≤2 after 90 days and decrease in NIH Stroke Scale score of ≥3 from admission to 24 hours (∆NIHSS). RESULTS Among patients with negative CTA (n = 107), 58 (54%) showed a distal occlusion on waveletCTA. There was no difference between patients receiving IVT (n = 57) vs supportive care (n = 50) regarding symptom onset, early ischemic changes, perfusion mismatch, or admission NIHSS score (all p > 0.05). In IVT-treated patients, the presence of an occlusion was an independent predictor of a favorable morphologic response (FIV/CBF: β -1.43; 95% confidence interval [CI] -1.96, -0.83; p = 0.001) and functional outcome (90-day modified Rankin Scale: odds ratio 7.68; 95% CI 4.33-11.51; p = 0.039; ∆NIHSS: odds ratio 5.76; 95% CI 3.98-8.27; p = 0.013), while it did not predict outcome in patients receiving supportive care (all p > 0.05). CONCLUSION In stroke patients with negative CTA, distal vessel occlusions as detected by waveletCTA are an independent predictor of a favorable response to IVT.
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Affiliation(s)
- Wolfgang G Kunz
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany.
| | - Matthias P Fabritius
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Wieland H Sommer
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Christopher Höhne
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Pierre Scheffler
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Lukas T Rotkopf
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Wolfgang P Fendler
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Bastian O Sabel
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Felix G Meinel
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Franziska Dorn
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Birgit Ertl-Wagner
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Maximilian F Reiser
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
| | - Kolja M Thierfelder
- From the Departments of Radiology (W.G.K., M.P.F., W.H.S., L.T.R., B.O.S., F.G.M., B.E.-W., M.F.R., K.M.T.), Neurology (C.H., P.S.), Nuclear Medicine (W.P.F.), and Neuroradiology (F.D.), University Hospital, LMU Munich; and the Institute of Diagnostic and Interventional Radiology (F.G.M., K.M.T.), University Medical Center Rostock, Germany
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Reidler P, Thierfelder KM, Fabritius MP, Sommer WH, Meinel FG, Dorn F, Wollenweber FA, Duering M, Kunz WG. Thalamic Diaschisis in Acute Ischemic Stroke. Stroke 2018. [DOI: 10.1161/strokeaha.118.020698] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Paul Reidler
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Kolja M. Thierfelder
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Matthias P. Fabritius
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Wieland H. Sommer
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Felix G. Meinel
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Franziska Dorn
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Frank A. Wollenweber
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Marco Duering
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
| | - Wolfgang G. Kunz
- From the Department of Radiology (P.R., K.M.T., M.P.F., W.H.S., W.G.K.) and Department of Neuroradiology (F.D.), University Hospital, LMU Munich, Germany; Institute of Diagnostic and Interventional Radiology, University Medical Center Rostock, Germany (K.M.T., F.G.M.); and Institute for Stroke and Dementia Research, University Hospital, LMU Munich, Germany (F.A.W., M.D.)
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Kunz WG, Sommer WH, Höhne C, Fabritius MP, Schuler F, Dorn F, Othman AE, Meinel FG, von Baumgarten L, Reiser MF, Ertl-Wagner B, Thierfelder KM. Crossed cerebellar diaschisis in acute ischemic stroke: Impact on morphologic and functional outcome. J Cereb Blood Flow Metab 2017; 37:3615-3624. [PMID: 28084869 PMCID: PMC5669343 DOI: 10.1177/0271678x16686594] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Crossed cerebellar diaschisis (CCD) is the phenomenon of hypoperfusion and hypometabolism of the contralateral cerebellar hemisphere caused by dysfunction of the related supratentorial region. Our aim was to analyze its influence on morphologic and functional outcome in acute ischemic stroke. Subjects with stroke caused by a large vessel occlusion of the anterior circulation were selected from an initial cohort of 1644 consecutive patients who underwent multiparametric CT including whole-brain CT perfusion. Two experienced readers evaluated the posterior fossa in terms of CCD absence (CCD-) or presence (CCD+). A total of 156 patients formed the study cohort with 102 patients (65.4%) categorized as CCD- and 54 (34.6%) as CCD+. In linear and logistic regression analyses, no significant association between CCD and final infarction volume (β = -0.440, p = 0.972), discharge mRS ≤ 2 (OR = 1.897, p = 0.320), or 90-day mRS ≤ 2 (OR = 0.531, p = 0.492) was detected. CCD+ patients had larger supratentorial cerebral blood flow deficits (median: 164 ml vs. 115 ml; p = 0.001) compared to CCD-patients. Regarding complications, CCD was associated with a higher rate of parenchymal hematomas (OR = 4.793, p = 0.035). In conclusion, CCD is frequently encountered in acute ischemic stroke caused by large vessel occlusion of the anterior circulation. CCD was associated with the occurrence of parenchymal hematoma in the ipsilateral cerebral infarction but did not prove to significantly influence patient outcome.
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Affiliation(s)
- Wolfgang G Kunz
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Wieland H Sommer
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Christopher Höhne
- 2 Department of Neurology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Matthias P Fabritius
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Felix Schuler
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Franziska Dorn
- 3 Department of Neuroradiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Ahmed E Othman
- 4 Department of Diagnostic and Interventional Radiology, Eberhard Karls University, Tuebingen, Germany
| | - Felix G Meinel
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Louisa von Baumgarten
- 2 Department of Neurology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Maximilian F Reiser
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Birgit Ertl-Wagner
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
| | - Kolja M Thierfelder
- 1 Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital Munich, Munich, Germany
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Fabritius MP, Thierfelder KM, Meinel FG, Othman AE, Dorn F, Sabel BO, Scheffler P, Ertl-Wagner B, Sommer WH, Kunz WG. Early Imaging Prediction of Malignant Cerebellar Edema Development in Acute Ischemic Stroke. Stroke 2017; 48:2597-2600. [DOI: 10.1161/strokeaha.117.018237] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/09/2017] [Accepted: 06/12/2017] [Indexed: 11/16/2022]
Affiliation(s)
- Matthias P. Fabritius
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Kolja M. Thierfelder
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Felix G. Meinel
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Ahmed E. Othman
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Franziska Dorn
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Bastian O. Sabel
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Pierre Scheffler
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Birgit Ertl-Wagner
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Wieland H. Sommer
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
| | - Wolfgang G. Kunz
- From the Institute for Clinical Radiology (M.P.F., K.M.T., F.G.M., B.O.S., B.E.-W., W.H.S., W.G.K.), Department of Neuroradiology (F.D.), and Department of Neurology (P.S.), Ludwig-Maximilians-University Hospital Munich, Germany; and Department for Diagnostic and Interventional Radiology, Eberhard Karls University Tuebingen, University Hospital Tuebingen, Germany (A.E.O.)
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