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Frantzi N, Nguyen XP, Herr C, Alter P, Söhler S, Soriano D, Watz H, Waschki B, Trinkmann F, Eichenlaub M, Trudzinski FC, Michels-Zetsche JD, Omlor A, Seiler F, Moneke I, Biertz F, Rohde G, Stolz D, Welte T, Kauczor HU, Kahnert K, Jörres RA, Vogelmeier CF, Bals R, Fähndrich S. Statins did not reduce the frequency of exacerbations in individuals with COPD and cardiovascular comorbidities in the COSYCONET cohort. Respir Res 2024; 25:207. [PMID: 38750572 PMCID: PMC11097413 DOI: 10.1186/s12931-024-02822-1] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/25/2024] [Indexed: 05/18/2024] Open
Abstract
BACKGROUND The evidence regarding effects of statins on exacerbation risk in COPD remains controversial. Previous studies often excluded patients with cardiovascular comorbidities despite their high prevalence in COPD and role for exacerbations. Based on the cardioprotective properties of statins, we hypothesised that statins may reduce the risk of exacerbations especially in patients with cardiovascular comorbidities. METHODS One thousand eight hundred eighty seven patients of the German COPD cohort COSYCONET (COPD and Systemic Consequences Comorbidities Network) of GOLD grades 1-4 (37.8% female, mean age 64.78 ± 8.3) were examined at baseline and over a period of 4.5 years for the occurrence of at least one exacerbation or severe exacerbation per year in cross-sectional and longitudinal analyses adjusted for age, gender, BMI, GOLD grade and pack-years. Due to their collinearity, various cardiovascular diseases were tested in separate analyses, whereby the potential effect of statins in the presence of a specific comorbidity was tested as interaction between statins and comorbidity. We also identified patients who never took statins, always took statins, or initiated statin intake during the follow-up. RESULTS One thousand three hundred six patients never took statins, 31.6% were statin user, and 12.9% initiated statins during the follow-up. Most cardiovascular diseases were significantly (p < 0.05)may associated with an increased risk of COPD exacerbations, but in none of them the intake of statins was a significant attenuating factor, neither overall nor in modulating the increased risk linked to the specific comorbidities. The results of the cross-sectional and longitudinal analyses were consistent with each other, also those regarding at least 1 exacerbation or at least 1 severe exacerbation per year. CONCLUSION These findings complement the existing literature and may suggest that even in patients with COPD, cardiovascular comorbidities and a statin therapy that targets these comorbidities, the effects of statins on exacerbation risk are either negligible or more subtle than a reduction in exacerbation frequency. TRIAL REGISTRATION Trial registration ClinicalTrials.gov, Identifier: NCT01245933. Other Study ID (BMBF grant): 01GI0881, registered 18 November 2010, study start 2010-11, primary completion 2013-12, study completion 2023-09. https://clinicaltrials.gov/study/NCT01245933?cond=COPD&term=COSYCONET&rank=3.
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Affiliation(s)
- N Frantzi
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - X P Nguyen
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - C Herr
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - P Alter
- Department of Medicine, Pulmonary, Critical Care and Sleep Medicine, German Center for Lung Research (DZL), Philipps University of Marburg (UMR), Marburg, Germany
| | - S Söhler
- Department of Medicine, Pulmonary, Critical Care and Sleep Medicine, German Center for Lung Research (DZL), Philipps University of Marburg (UMR), Marburg, Germany
| | - D Soriano
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - H Watz
- Airway Research Center North (ARCN), Pulmonary Research Institute at LungenClinic Grosshansdorf, Grosshansdorf, DZ, Germany
- LungenClinic Grosshansdorf, Airway Research Center North (ARCN), Member of the German Center for Lung Research (DZL), Grosshansdorf, Germany
| | - B Waschki
- Airway Research Center North (ARCN), Pulmonary Research Institute at LungenClinic Grosshansdorf, Grosshansdorf, DZ, Germany
- Hospital Itzehoe, Pneumology, Itzehoe, Germany
- Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - F Trinkmann
- Department of Pneumology and Critical Care, Member of the German Center for Lung Research (DZL), Translational Lung Research Center Heidelberg (TLRC-H), Thoraxklinik Heidelberg gGmbH, Heidelberg, Germany
| | - M Eichenlaub
- Department of Cardiology and Angiology, Medical Center, University of Freiburg, Freiburg, Germany
| | - F C Trudzinski
- Department of Pneumology and Critical Care, Member of the German Center for Lung Research (DZL), Translational Lung Research Center Heidelberg (TLRC-H), Thoraxklinik Heidelberg gGmbH, Heidelberg, Germany
| | - J D Michels-Zetsche
- Department of Pneumology and Critical Care, Member of the German Center for Lung Research (DZL), Translational Lung Research Center Heidelberg (TLRC-H), Thoraxklinik Heidelberg gGmbH, Heidelberg, Germany
| | - A Omlor
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - F Seiler
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - I Moneke
- Department of Thoracic Surgery, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - F Biertz
- Hannover Medical School, CAPNETZ STIFTUNG, Hannover, Germany
| | - G Rohde
- Department of Respiratory Medicine, Goethe University Frankfurt, University Hospital, Medical Clinic I, Frankfurt/Main, Germany
| | - D Stolz
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - T Welte
- Department of Respiratory Medicine, (BREATH), Member of the German Center for Lung Research (DZL), Research in Endstage and Obstructive Lung Disease Hannover, Hannover, Germany
| | - H U Kauczor
- Diagnostic and Interventional Radiology, Member of the German Center of Lung Research, University Hospital Heidelberg, Heidelberg, Germany
| | - K Kahnert
- Department of Internal Medicine V, LMU University Hospital, LMU Munich, Comprehensive Pneumology Center, Member of the German Center for Lung Research (DZL), Ludwig-Maximilians-University Munich (LMU), Munich, Germany
| | - R A Jörres
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Comprehensive Pneumology Center, Member of the German Center for Lung Research (DZL), LMU University Hospital, Ludwig-Maximilians-University Munich (LMU), Munich, Germany
| | - C F Vogelmeier
- Department of Medicine, Pulmonary, Critical Care and Sleep Medicine, German Center for Lung Research (DZL), Philipps University of Marburg (UMR), Marburg, Germany
| | - R Bals
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
- Helmholtz Centre for Infection Research (HZI), Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus, Saarbrücken, Germany
| | - S Fähndrich
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany.
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Röhrich M, Rosales JJ, Hoppner J, Kvacskay P, Blank N, Loi L, Paech D, Schreckenberger M, Giesel F, Kauczor HU, Lorenz HM, Haberkorn U, Merkt W. Fibroblast Activation Protein Inhibitor-Positron Emission Tomography in Aortitis: Fibroblast pathology in active inflammation and remission. Rheumatology (Oxford) 2024:keae225. [PMID: 38648749 DOI: 10.1093/rheumatology/keae225] [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: 11/08/2023] [Revised: 03/29/2024] [Accepted: 04/07/2024] [Indexed: 04/25/2024] Open
Abstract
OBJECTIVES Epigenetically modified fibroblasts contribute to chronicity in inflammatory diseases. Reasons for the relapsing character of large vessel vasculitis (LVV) remain obscure, including the role of fibroblasts, in part due to limited access to biopsies of involved tissue.68Ga FAPI-46 (FAPI)-PET/CT detects activated fibroblasts in vivo. In this exploratory pilot study, we tested the detection of fibroblast activation in vessel walls using FAPI-PET/CT in LVV with aortitis. METHODS 8 LVV patients with aortitis and 8 age- and gender-matched controls were included. Distribution of FAPI uptake was evaluated in the aorta and large vessels. FAPI-uptake was compared with MRI inflammatory activity scores. Imaging results were compared with clinical parameters such as serum inflammatory markers, time of remission and medication. RESULTS Three aortitis patients were clinically active, five in remission. Irrespective of activity, FAPI uptake was significantly enhanced in aortitis compared with controls. Patients in remission had a mean duration of remission of 2.8 years (range 1-4 years), yet significant FAPI uptake in the vessel wall was found.In remitted aortitis, MRI inflammatory scores were close to be negative, while in 4/5 patients visually identifiable FAPI uptake was observed. CONCLUSIONS This pilot feasibility study shows significant tracer uptake in the aortic walls in LVV. FAPI positivity indicates ongoing fibroblast pathology in clinically remitted LVV.
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Affiliation(s)
- M Röhrich
- Department of Nuclear Medicine, Heidelberg University Hospital, Heidelberg, Germany
- Department of Nuclear Medicine, Mainz University Hospital, Mainz, Germany
| | - J J Rosales
- Department of Nuclear Medicine, Heidelberg University Hospital, Heidelberg, Germany
- Department of Nuclear Medicine, University Clinic Of Navarra, Pamplona, Spain
| | - J Hoppner
- Department of Nuclear Medicine, Heidelberg University Hospital, Heidelberg, Germany
| | - P Kvacskay
- Department of Hematology, Oncology and Rheumatology, Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
| | - N Blank
- Department of Hematology, Oncology and Rheumatology, Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
| | - L Loi
- Division of Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - D Paech
- Division of Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Neuroradiology, Bonn University Hospital, Bonn, Germany
| | - M Schreckenberger
- Department of Nuclear Medicine, Mainz University Hospital, Mainz, Germany
| | - F Giesel
- Department of Nuclear Medicine, Heidelberg University Hospital, Heidelberg, Germany
- Department of Nuclear Medicine, Medical Faculty, Heinrich-Heine-University, University Hospital Düsseldorf, Düsseldorf, Germany
- Institute for Radiation Sciences, Osaka University, Osaka, Japan
| | - H U Kauczor
- Department of Diagnostic & Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
| | - H M Lorenz
- Department of Hematology, Oncology and Rheumatology, Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
| | - U Haberkorn
- Department of Nuclear Medicine, Heidelberg University Hospital, Heidelberg, Germany
- Translational Lung Research Center Heidelberg, Member of the German Center for Lung Research DZL, Heidelberg, Germany
| | - W Merkt
- Department of Hematology, Oncology and Rheumatology, Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
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Fähndrich S, Herr C, Teuteberg S, Alter P, Söhler S, Soriano D, Classen J, Adams J, Weinhold V, Watz H, Waschki B, Zeller T, Eichenlaub M, Trudzinski FC, Michels JD, Omlor A, Seiler F, Moneke I, Biertz F, Stolz D, Welte T, Kauczor HU, Kahnert K, Jörres RA, Vogelmeier CF, Bals R. Midregional proatrial naturetic peptide (MRproANP) and copeptin (COPAVP) as predictors of all-cause mortality in recently diagnosed mild to moderate COPD-results from COSYCONET. Respir Res 2024; 25:56. [PMID: 38267944 PMCID: PMC10809634 DOI: 10.1186/s12931-024-02690-9] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/12/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND MRproANP and COPAVP are prognostic markers for mortality in chronic obstructive pulmonary disease (COPD). Furthermore, these biomarkers predict mortality due to cardiovascular diseases, which are important prognostically determining comorbidities in patients with COPD. However, less is known about these biomarkers in recently diagnosed mild to moderate COPD. Therefore, we analyzed these biomarkers as potential predictors of mortality in recently diagnosed mild to moderate COPD. METHODS The blood biomarkers considered were copeptin (COPAVP), midregional adrenomedullin (MRproADM), midregional proatrial naturetic peptide (MRproANP), and fibrinogen. Analyses were performed in patients with stable "recently diagnosed mild to moderate COPD" defined by GOLD grades 0-2 and diagnosis of COPD ≤ 5 years prior to inclusion into the COSYCONET cohort (COPD and Systemic Consequences-Comorbidities Network), using Cox regression analysis with stepwise adjustment for multiple COPD characteristics, comorbidities, troponin and NT-proBNP. RESULTS 655 patients with recently diagnosed mild to moderate COPD were included. In the initial regression model, 43 of 655 patients died during the 6-year follow-up, in the final model 27 of 487. Regression analyses with adjustment for confounders identified COPAVP and MRproANP as statistically robust biomarkers (p < 0.05 each) of all-cause mortality, while MRproADM and fibrinogen were not. The fourth quartile of MRproANP (97 pmol/L) was associated with a hazard ratio of 4.5 (95%CI: 1.6; 12.8), and the fourth quartile of COPAVP (9.2 pmol/L) with 3.0 (1.1; 8.0). The results for MRproANP were confirmed in the total cohort of grade 0-4 (n = 1470 finally). CONCLUSION In patients with recently diagnosed mild to moderate COPD, elevated values of COPVP and in particular MRproANP were robust, independent biomarkers for all-cause mortality risk after adjustment for multiple other factors. This suggests that these markers might be considered in the risk assessment of early COPD.
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Affiliation(s)
- S Fähndrich
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany.
| | - C Herr
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - S Teuteberg
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - P Alter
- Department of Medicine, Pulmonary, Critical Care and Sleep Medicine, Philipps University of Marburg (UMR), German Center for Lung Research (DZL), Marburg, Germany
| | - S Söhler
- Department of Medicine, Pulmonary, Critical Care and Sleep Medicine, Philipps University of Marburg (UMR), German Center for Lung Research (DZL), Marburg, Germany
| | - D Soriano
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - J Classen
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - J Adams
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - V Weinhold
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - H Watz
- Airway Research Center North (ARCN), Pulmonary Research Institute at LungenClinic Grosshansdorf, Grosshansdorf, DZ, Germany
| | - B Waschki
- LungenClinic Grosshansdorf, Member of the German Center for Lung Research (DZL), Airway Research Center North (ARCN), Grosshansdorf, Germany
- Pneumology, Hospital Itzehoe, Itzehoe, Germany
- University Heart & Vascular Center Hamburg, Department of Cardiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - T Zeller
- University Heart & Vascular Center Hamburg, Department of Cardiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
| | - M Eichenlaub
- Department of Cardiology and Angiology, Medical Center, University of Freiburg, Freiburg, Germany
| | - F C Trudzinski
- Department of Pneumology and Critical Care, Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Thoraxklinik Heidelberg gGmbH, Heidelberg, Germany
| | - J D Michels
- Department of Pneumology and Critical Care, Heidelberg, Translational Lung Research Center Heidelberg (TLRC-H), Member of the German Center for Lung Research (DZL), Thoraxklinik Heidelberg gGmbH, Heidelberg, Germany
| | - A Omlor
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - F Seiler
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
| | - I Moneke
- Department of Thoracic Surgery, Faculty of Medicine, Medical Center-University of Freiburg, University of Freiburg, Freiburg, Germany
| | - F Biertz
- Institute for Biostatistics, Hannover Medical School, Hannover, Germany
| | - D Stolz
- Department of Pneumology, Faculty of Medicine, Medical Center, University of Freiburg, Killianstrasse 5, 79106, Freiburg, Germany
| | - T Welte
- Department of Respiratory Medicine, Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Hannover, Member of the German Center for Lung Research (DZL), Hannover Medical School, Hannover, Germany
| | - H U Kauczor
- Diagnostic and Interventional Radiology, Member of the German Center of Lung Research, University Hospital Heidelberg, Heidelberg, Germany
| | - K Kahnert
- Department of Internal Medicine V, Comprehensive Pneumology Center, Member of the German Center for Lung Research (DZL), LMU University Hospital, LMU Munich, Ludwig-Maximilians-University Munich (LMU), Munich, Germany
| | - R A Jörres
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Munich, Germany
| | - C F Vogelmeier
- Department of Medicine, Pulmonary, Critical Care and Sleep Medicine, Philipps University of Marburg (UMR), German Center for Lung Research (DZL), Marburg, Germany
- Airway Research Center North (ARCN), Pulmonary Research Institute at LungenClinic Grosshansdorf, Grosshansdorf, DZ, Germany
| | - R Bals
- Department of Internal Medicine V - Pulmonology, Allergology, Critical Care Care Medicine, Saarland University Hospital, Homburg, Germany
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University Campus, Saarbrücken, Germany
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Do TD, Haas A, Vollherbst DF, Pan F, Melzig C, Jesser J, Pereira PL, Kauczor HU, Skornitzke S, Sommer CM. Semi-automatic artifact quantification in thermal ablation probe and algorithms for the evaluation of metal artifact reduction. Int J Hyperthermia 2023; 40:2205071. [PMID: 37127281 DOI: 10.1080/02656736.2023.2205071] [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: 10/13/2022] [Revised: 03/29/2023] [Accepted: 04/15/2023] [Indexed: 05/03/2023] Open
Abstract
OBJECTIVES To compare metal artifacts and evaluation of metal artifact reduction algorithms during probe positioning in computed tomography (CT)-guided microwave ablation (MWA), cryoablation (CRYO), and radiofrequency ablation (RFA). MATERIALS AND METHODS Using CT guidance, individual MWA, CRYO, and RFA ablation probes were placed into the livers of 15 pigs. CT imaging was then performed to determine the probe's position within the test subject's liver. Filtered back projection (B30f) and iterative reconstructions (I30-1) were both used with and without dedicated iterative metal artifact reduction (iMAR) to generate images from the initial data sets. Semi-automatic segmentation-based quantitative evaluation was conducted to estimate artifact percentage within the liver, while qualitative evaluation of metal artifact extent and overall image quality was performed by two observers using a 5-point Likert scale: 1-none, 2-mild, 3-moderate, 4-severe, 5-non-diagnostic. RESULTS Among MWA, RFA, and CRYO, compared with non-iMAR in B30f reconstruction, the largest extent of artifact volume percentages were observed for CRYO (11.5-17.9%), followed by MWA (4.7-6.6%) and lastly in RFA (5.5-6.2%). iMAR significantly reduces metal artifacts for CRYO and MWA quantitatively (p = 0.0020; p = 0.0036, respectively) and qualitatively (p = 0.0001, p = 0.0005), but not for RFA. No significant reduction in metal artifact percentage was seen after applying iterative reconstructions (p > 0.05). Noise, contrast-to-noise-ratio, or overall image quality did not differ between probe types, irrespective of the application of iterative reconstruction and iMAR. CONCLUSION A dedicated metal artifact algorithm may decrease metal artifacts and improves image quality significantly for MWA and CRYO probes. Their application alongside with dedicated metal artifact algorithm should be considered during CT-guided positioning.
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Affiliation(s)
- T D Do
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - A Haas
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - D F Vollherbst
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - F Pan
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
| | - C Melzig
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - J Jesser
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - P L Pereira
- Center for Radiology, Minimally-invasive Therapies and Nuclear Medicine, SLK Kliniken Heilbronn GmbH, Heilbronn, Germany
| | - H U Kauczor
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - S Skornitzke
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - C M Sommer
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Nuclear Medicine, University Hospital Heidelberg, Germany
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Stein P, Lückerath C, Melzig C, Bülhoff M, Tanner M, Kauczor HU, Rehnitz C. [Postoperative imaging of the shoulder]. Radiologie (Heidelb) 2022; 62:835-843. [PMID: 35771235 DOI: 10.1007/s00117-022-01026-2] [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] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Imaging of the postoperative shoulder joint includes complex, diagnostically challenging changes regarding the anatomical structures. OBJECTIVES Case-based presentation of common surgical procedures, expected postoperative findings, and typical complications. MATERIALS AND METHODS Interdisciplinary evaluation of (didactically instructive) cases and discussion of pertinent literature and expert opinions. RESULTS Presentation of normal postoperative findings and complications after subacromial decompression, surgical treatment of rotator cuff lesions, SLAP (superior labral anterior to posterior) lesions/lesions of the long biceps tendon, Bankart lesions as well as instability-related procedures and after shoulder arthroplasty. Discussion of the appropriate use of imaging methods with a focus on magnetic resonance imaging (MRI), which are supplemented by computed tomography (CT), and conventional x‑ray images. CONCLUSION The broad spectrum of complex findings as well as the evermore developing and thereby changing surgical procedures result in significant challenges in the radiological evaluation of the postoperative shoulder joint. To differentiate physiological reactions from pathological changes it is necessary to have general knowledge of the common surgical procedures, expected postoperative findings and possible complications. A variety imaging modalities can be used to further advance diagnostic precision.
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Affiliation(s)
- P Stein
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland
| | - C Lückerath
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland
| | - C Melzig
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland
| | - M Bülhoff
- Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Heidelberg, Heidelberg, Deutschland
| | - M Tanner
- Klinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Heidelberg, Heidelberg, Deutschland
| | - H U Kauczor
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland
| | - C Rehnitz
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Deutschland.
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Sommer CM, Pieper CC, Offensperger F, Pan F, Killguss HJ, Köninger J, Loos M, Hackert T, Wortmann M, Do TD, Maleux G, Richter GM, Kauczor HU, Kim J, Hur S. Radiological management of postoperative lymphorrhea. Langenbecks Arch Surg 2021; 406:945-969. [PMID: 33844077 DOI: 10.1007/s00423-021-02094-z] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 01/17/2021] [Indexed: 12/21/2022]
Abstract
PURPOSE Postoperative lymphorrhea can occur after different surgical procedures and may prolong the hospital stay due to the need for specific treatment. In this work, the therapeutic significance of the radiological management of postoperative lymphorrhea was assessed and illustrated. METHOD A standardized search of the literature was performed in PubMed applying the Medical Subject Headings (MeSH) term "lymphangiography." For the review, the inclusion criterion was "studies with original data on Lipiodol-based Conventional Lymphangiography (CL) with subsequent Percutaneous Lymphatic Intervention (PLI)." Different exclusion criteria were defined (e.g., studies with <15 patients). The collected data comprised of clinical background and indications, procedural aspects and types of PLI, and outcomes. In the form of a pictorial essay, each author illustrated a clinical case with CL and/or PLI. RESULTS Seven studies (corresponding to evidence level 4 [Oxford Centre for Evidence-Based Medicine]) accounting for 196 patients were included in the synthesis and analysis of data. Preceding surgery resulting in postoperative lymphorrhea included different surgical procedures such as extended oncologic surgery or vascular surgery. Central (e.g., chylothorax) and peripheral (e.g., lymphocele) types of postoperative lymphorrhea with a drainage volume of 100-4000 ml/day underwent CL with subsequent PLI. The intervals between "preceding surgery and CL" and between "CL and PLI" were 2-330 days and 0-5 days, respectively. CL was performed before PLI to visualize the lymphatic pathology (e.g., leakage point or inflow lymph ducts), applying fluoroscopy, radiography, and/or computed tomography (CT). In total, seven different types of PLI were identified: (1) thoracic duct (or thoracic inflow lymph duct) embolization, (2) thoracic duct (or thoracic inflow lymph duct) maceration, (3) leakage point direct embolization, (4) inflow lymph node interstitial embolization, (5) inflow lymph duct (other than thoracic) embolization, (6) inflow lymph duct (other than thoracic) maceration, and (7) transvenous retrograde lymph duct embolization. CL-associated and PLI-associated technical success rates were 97-100% and 89-100%, respectively. The clinical success rate of CL and PLI was 73-95%. CL-associated and PLI-associated major complication rates were 0-3% and 0-5%, respectively. The combined CL- and PLI-associated 30-day mortality rate was 0%, and the overall mortality rate was 3% (corresponding to six patients). In the pictorial essay, the spectrum of CL and/or PLI was illustrated. CONCLUSION The radiological management of postoperative lymphorrhea is feasible, safe, and effective. Standardized radiological treatments embedded in an interdisciplinary concept are a step towards improving outcomes.
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Affiliation(s)
- C M Sommer
- Clinic of Diagnostic and Interventional Radiology, Stuttgart Clinics, Kriegsbergstrasse 60, 70174, Stuttgart, Germany.
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, INF 420, 69120, Heidelberg, Germany.
- Clinic of Radiology and Neuroradiology, Sana Kliniken Duisburg, Zu den Rehwiesen 9-11, 47055, Duisburg, Germany.
- Department of Nuclear Medicine, Heidelberg University Hospital, INF 400, 69120, Heidelberg, Germany.
| | - C C Pieper
- Clinic of Diagnostic and Interventional Radiology, Bonn University Hospital, Venusberg-Campus 1, 53105, Bonn, Germany
| | - F Offensperger
- Clinic of Diagnostic and Interventional Radiology, Stuttgart Clinics, Kriegsbergstrasse 60, 70174, Stuttgart, Germany
| | - F Pan
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, INF 420, 69120, Heidelberg, Germany
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - H J Killguss
- Clinic of General, Visceral, Thoracic and Transplantation Surgery, Stuttgart Clinics, Kriegsbergstrasse 60, 70174, Stuttgart, Germany
| | - J Köninger
- Clinic of General, Visceral, Thoracic and Transplantation Surgery, Stuttgart Clinics, Kriegsbergstrasse 60, 70174, Stuttgart, Germany
| | - M Loos
- Clinic of General, Visceral, and Transplantation Surgery, Heidelberg University Hospital, INF 420, 69120, Heidelberg, Germany
| | - T Hackert
- Clinic of General, Visceral, and Transplantation Surgery, Heidelberg University Hospital, INF 420, 69120, Heidelberg, Germany
| | - M Wortmann
- Clinic of Vascular and Endovascular Surgery, Heidelberg University Hospital, INF 420, 69120, Heidelberg, Germany
| | - T D Do
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, INF 420, 69120, Heidelberg, Germany
| | - G Maleux
- Department of Radiology, Leuven University Hospitals, Herestraat 49, 3000, Leuven, UZ, Belgium
| | - G M Richter
- Clinic of Diagnostic and Interventional Radiology, Stuttgart Clinics, Kriegsbergstrasse 60, 70174, Stuttgart, Germany
| | - H U Kauczor
- Clinic of Diagnostic and Interventional Radiology, Heidelberg University Hospital, INF 420, 69120, Heidelberg, Germany
| | - J Kim
- Department of Radiology, School of Medicine, Ajou University Hospital, Ajou University, 164 World Cup-ro, Yeongtong-gu, Suwon, 16499, Republic of Korea
| | - S Hur
- Department of Radiology, Seoul National University Hospital, 101 Daehak-ro, Ihwa-dong, Jongno-gu, Seoul, Republic of Korea
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7
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Brandelik SC, Skornitzke S, Mokry T, Sauer S, Stiller W, Nattenmüller J, Kauczor HU, Weber TF, Do TD. Quantitative and qualitative assessment of plasma cell dyscrasias in dual-layer spectral CT. Eur Radiol 2021; 31:7664-7673. [PMID: 33783572 PMCID: PMC8452563 DOI: 10.1007/s00330-021-07821-0] [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: 12/23/2020] [Accepted: 02/19/2021] [Indexed: 01/01/2023]
Abstract
Objectives Virtual non-calcium (VNCa) images could improve assessment of plasma cell dyscrasias by enhancing visibility of bone marrow. Thus, VNCa images from dual-layer spectral CT (DLCT) were evaluated at different calcium suppression (CaSupp) indices, correlating results with apparent diffusion coefficient (ADC) values from MRI. Methods Thirty-two patients with initial clinical diagnosis of a plasma cell dyscrasia before any chemotherapeutic treatment, who had undergone whole-body low-dose DLCT and MRI within 2 months, were retrospectively enrolled. VNCa images with CaSupp indices ranging from 25 to 95 in steps of 10, conventional CT images, and ADC maps were quantitatively analyzed using region-of-interests in the vertebral bodies C7, T12, L1-L5, and the iliac bone. Independent two-sample t-test, Wilcoxon-signed-rank test, Pearson’s correlation, and ROC analysis were performed. Results Eighteen patients had a non-diffuse, 14 a diffuse infiltration in conventional MRI. A significant difference between diffuse and non-diffuse infiltration was shown for VNCa-CT with CaSupp indices from 55 to 95, for conventional CT, and for ADC (each p < 0.0001). Significant quantitative correlation between VNCa-CT and MRI could be found with strongest correlation at CaSupp index 65 for L3 (r = 0.68, p < 0.0001) and averaged L1-L5 (r = 0.66, p < 0.0001). The optimum CT number cut-off point for differentiation between diffuse and non-diffuse infiltration at CaSupp index 65 for averaged L1-L5 was −1.6 HU (sensitivity 78.6%, specificity 75.0%). Conclusion Measurements in VNCa-CT showed the highest correlation with ADC at CaSupp index 65. VNCa technique may prove useful for evaluation of bone marrow infiltration if MRI is not feasible. Key Points • VNCa-CT images can support the evaluation of bone marrow infiltration in plasma cell dyscrasias. • VNCa measurements of vertebral bodies show significant correlation with ADC in MRI. • Averaging L1-L5 at CaSupp index 65 allowed quantitative detection of infiltration comparable to MRI ADC.
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Affiliation(s)
- S C Brandelik
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - S Skornitzke
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - T Mokry
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - S Sauer
- Medical Department V, Hematology/Oncology/Rheumatology, Heidelberg University Hospital, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - W Stiller
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - J Nattenmüller
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - H U Kauczor
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - T F Weber
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - T D Do
- Clinic of Diagnostic and Interventional Radiology (DIR), Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany.
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8
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Mayer P, Giannakis A, Klauß M, Gaida MM, Bergmann F, Kauczor HU, Feisst M, Hackert T, Loos M. Radiological evaluation of pancreatic cancer: What is the significance of arterial encasement >180° after neoadjuvant treatment? Eur J Radiol 2021; 137:109603. [PMID: 33618209 DOI: 10.1016/j.ejrad.2021.109603] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/16/2021] [Accepted: 02/08/2021] [Indexed: 12/27/2022]
Abstract
PURPOSE This study aimed to evaluate contrast-enhanced computed tomography (CE-CT) features for prediction of arterial tumor invasion in pancreatic cancer (PDAC) patients in the event of arterial encasement >180° after neoadjuvant (radio-)chemotherapy (NAT). METHODS Seventy PDAC patients with seventy-five arteries showing encasement >180° after completion of NAT were analyzed. All patients underwent surgical exploration with either tumor resection including arterial resection, periadventitial dissection (arterial divestment) or confirmation of locally irresectable disease. CE-CT scans were assessed regarding tumor extent and artery-specific imaging features. The results were analyzed on a per-artery basis. Based on the intraoperative and histopathological findings, encased arteries were classified as either invaded or non-invaded. RESULTS Eighteen radiologically encased arteries were resected; of these, nine had pathologic evidence for tumor invasion. In 42 encased arteries, the tumor could be removed by arterial divestment. In 13 patients with 15 encased arteries, the tumor was deemed technically irresectable. Median tumor size, length of solid soft tissue contact, and degree of circumferential contiguity by solid soft tissue along the artery in CE-CT were significantly lower in the non-invaded than in the invaded artery group (p ≤ 0.017). Imaging features showed moderate accuracies for prediction of arterial invasion (≤72.0 %). The thresholds ≤26 mm for post-NAT solid soft tissue contact and ≤270° for circumferential contiguity by solid soft tissue had high negative predictive values (≥87.5 %). CONCLUSION Although post-NAT prediction of arterial invasion remains difficult, arteries with ≤270° contiguity by soft tissue and arteries with ≤26 mm length of solid soft tissue contact are unlikely to be invaded, with possible implications for surgical planning.
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Affiliation(s)
- P Mayer
- Department of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany.
| | - A Giannakis
- Department of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
| | - M Klauß
- Department of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
| | - M M Gaida
- Institute of Pathology, University Medical Center Mainz, Mainz, Germany
| | - F Bergmann
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
| | - H U Kauczor
- Department of Diagnostic and Interventional Radiology, Heidelberg University Hospital, Heidelberg, Germany
| | - M Feisst
- Institute of Medical Biometry and Informatics, Heidelberg University, Heidelberg, Germany
| | - T Hackert
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
| | - M Loos
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Heidelberg, Germany
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9
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Pan F, Loos M, Do TD, Richter GM, Kauczor HU, Hackert T, Sommer CM. Percutaneous afferent lymphatic vessel sclerotherapy for postoperative lymphatic leakage after previous ineffective therapeutic transpedal lymphangiography. Eur Radiol Exp 2020; 4:60. [PMID: 33135104 PMCID: PMC7604276 DOI: 10.1186/s41747-020-00188-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 08/08/2020] [Accepted: 10/01/2020] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND To demonstrate the efficacy of percutaneous computed tomography (CT)-guided afferent lymphatic vessel sclerotherapy (ALVS) in the treatment of postoperative lymphatic leakage (LL) after ineffective therapeutic transpedal lymphangiography (TL). METHODS A retrospective review in this institute involving 201 patients was conducted from May 2011 to September 2018. Patients diagnosed with postoperative LL undergoing ineffective therapeutical TL before the performance of percutaneous CT-guided ALVS were involved. Technical success and clinical success of TL and ALVS were established. The technical success and efficacy of ALVS in the treatment of postoperative LL after ineffective therapeutic TL were assessed. The clinical success rate of ALVS is also assessed, and the complications are reviewed. RESULTS In total, nine patients were involved including three patients (33.3%) presented with chylothorax, three patients (33.3%) presented with inguinal lymphatic fistula/lymphocele, and three patients (33.3%) presented with lymphatic fistula in the thigh; 27 ± 18 days (mean ± standard deviation) after surgery, therapeutic TL was successfully performed and showed definite afferent lymphatic vessel and leakage site in all the patients. Due to clinical failure after TLs, the following ALVS was performed with a mean interval of 12 ± 8 days after TL. The technical success rate was 9/9 (100.0%, 95% confidence interval [CI] 63.1-100.0%). An average of 2.7 ± 1.3 mL 95% ethanol as sclerosant agent was injected during the procedure. The clinical success was observed in 8 of the 9 patients (88.9%, 95% CI 51.8-99.7%) with a time between ALVS and the LL cure of 8 ± 6 days. No complications were reported. CONCLUSIONS Our results showed the role of percutaneous CT-guided ALVS as a safe, feasible, and effective salvage treatment for postoperative LL after ineffective TL.
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Affiliation(s)
- F Pan
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany.,Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - M Loos
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - T D Do
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany
| | - G M Richter
- Clinic for Diagnostic and Interventional Radiology, Stuttgart Clinics, Katharinenhospital, Kriegsbergstrasse 60, 70174, Stuttgart, Germany
| | - H U Kauczor
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany
| | - T Hackert
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - C M Sommer
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany. .,Clinic for Diagnostic and Interventional Radiology, Stuttgart Clinics, Katharinenhospital, Kriegsbergstrasse 60, 70174, Stuttgart, Germany.
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10
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Pan F, Loos M, Do TD, Richter GM, Kauczor HU, Hackert T, Sommer CM. The roles of iodized oil-based lymphangiography and post-lymphangiographic computed tomography for specific lymphatic intervention planning in patients with postoperative lymphatic fistula: a literature review and case series. CVIR Endovasc 2020; 3:79. [PMID: 33085018 PMCID: PMC7578215 DOI: 10.1186/s42155-020-00146-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 05/07/2020] [Accepted: 08/03/2020] [Indexed: 01/30/2023] Open
Abstract
In the management of patients with postoperative lymphatic fistula (LF) in different locations, iodized oil-based lymphangiography (LAG) from trans-pedal or intranodal route is an established diagnostic approach with the potential to plan further interventional treatments. However, specific lymphatic interventions are indicated depending on different locations and morphologies of the LF. After a systematic literature review, four types of interventions can be considered, including direct leakage embolization/sclerotherapy (DLE/DLS), percutaneous afferent lymphatic vessel embolization (ALVE), percutaneous afferent lymphatic vessels disruption/sclerotherapy (ALVD/ALVS), and trans-afferent nodal embolization (TNE). In the iodized oil-based LAG, three potential lymphatic targets including confined leakage, definite afferent LVs, and definite closest afferent LNs should be comprehensively assessed. For optimal prospective treatment planning for LF, iodized oil-based post-lymphangiographic computed tomography (post-LAG CT) is a useful complement to the conventional iodized oil-based LAG, which can be performed easily after LAG. This review article summarized the current evidence of the specific lymphatic interventions in patients with postoperative LF and explored the potential benefits of post-LAG CT in the intervention planning from a case series.
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Affiliation(s)
- F Pan
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany.,Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - M Loos
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - T D Do
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany
| | - G M Richter
- Clinic for Diagnostic and Interventional Radiology, Stuttgart Clinics, Katharinenhospital, Kriegsbergstrasse 60, 70174, Stuttgart, Germany
| | - H U Kauczor
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany
| | - T Hackert
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - C M Sommer
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany. .,Clinic for Diagnostic and Interventional Radiology, Stuttgart Clinics, Katharinenhospital, Kriegsbergstrasse 60, 70174, Stuttgart, Germany.
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11
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Do TD, Heim J, Melzig C, Vollherbst DF, Kauczor HU, Skornitzke S, Sommer CM. Virtual monochromatic spectral imaging versus linearly blended dual-energy and single-energy imaging during CT-guided biopsy needle positioning: Optimization of keV settings and impact on image quality. PLoS One 2020; 15:e0228578. [PMID: 32040496 PMCID: PMC7010258 DOI: 10.1371/journal.pone.0228578] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 01/17/2020] [Indexed: 01/08/2023] Open
Abstract
Objectives To compare image quality and metal artifact reduction between virtual monochromatic spectral imaging (VMSI), linearly blended dual-energy (DE) and single-energy (SE) images, each with and without dedicated iterative metal artifact reduction (iMAR) for CT-guided biopsy. Materials and methods A biopsy trocar was positioned in the liver of six pigs. DE (Sn140/100kVp) and SE (120kVp/200mAs) acquisitions were performed with equivalent dose. From dual-energy datasets DE Q30-3 images and VMSI between 40–180 keV in steps of 20 keV were generated. From SE datasets I30-3 images were reconstructed. All images were reconstructed with and without iMAR. Objective image quality was analyzed applying density measurements at standardized positions (e.g. trocar tip and liver parenchyma adjacent to the trocar tip) and semi-automated threshold based segmentation. Subjective image quality was performed using semi-quantitative scores. Analyses were performed by two observers. Results At the trocar tip quantitative image analysis revealed significant difference in CT numbers between reconstructions with iMAR compared to reconstructions without iMAR for VMSI at lower keV levels (80 and 100 keV; p = 0.03) and DE (p = 0.03). For liver parenchyma CT numbers were significantly higher in VMSI at high keV compared to low keV (p≤0.01). VMSI at high keV also showed higher CT numbers compared to DE and SE images, though not the level of statistical significance. The best signal-to-noise ratio for VMSI was at 80 keV and comparable to DE and SE. Noise was lowest at 80 keV and lower than in DE and SE. Subjective image quality was best with VMSI at 80 keV regardless of the application of iMAR. iMAR significantly improved image quality at levels of 140 keV and 160 keV. Interreader-agreement was good for quantitative and qualitative analysis. Conclusion iMAR improved image quality in all settings. VMSI with iMAR provided metal artifact reduction and better image quality at 80 keV and thus could improve the accurate positioning in CT-guided needle biopsy. In comparison, DE imaging did not improve image quality compared to SE.
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Affiliation(s)
- T. D. Do
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
- * E-mail:
| | - J. Heim
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - C. Melzig
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - D. F. Vollherbst
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - H. U. Kauczor
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - S. Skornitzke
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - C. M. Sommer
- Clinic for Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
- Clinic for Diagnostic and Interventional Radiology, Klinikum Stuttgart, Stuttgart, Germany
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12
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Alt CD, Katzenberger SM, Hallscheidt P, Sohn C, Kauczor HU, Eickhoff SB, Brocker KA. Urethral length and bladder neck behavior: can dynamic magnetic resonance imaging give the same results as introital ultrasound? Arch Gynecol Obstet 2019; 299:809-816. [PMID: 30706182 DOI: 10.1007/s00404-019-05060-9] [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: 10/22/2018] [Accepted: 01/21/2019] [Indexed: 11/29/2022]
Abstract
PURPOSE To compare dynamic magnetic resonance imaging (dMRI) and introital ultrasound results with regard to urethral length measurements and the evaluation of bladder neck changes. METHODS Retrospective analyses of urethral length measurements and detection of bladder neck changes (rotated/vertical bladder neck descent, urethral funneling) were conducted in women-scheduled for surgical treatment with alloplastic material-who had undergone introital ultrasound and dMRI presurgery and 3 months postsurgery. Measurement differences between both imaging modalities were evaluated by assessing the confidence interval for the difference in means between the datasets using bootstrap analysis. RESULTS Based on data from 40 patients (320 image series), the urethra could be clearly measured on every pre- and postsurgical dMRI dataset but not on preoperative ultrasound images in nine women during Valsalva maneuver due to a large cystocele. The estimation of the mean difference distribution based on 500,000 bootstrap resamples indicated that the urethral length was measured shorter by dMRI pre- and postsurgery at rest and postsurgery during Valsalva maneuver (median 1.6-3.1 mm) but longer by dMRI (median 0.2 mm) during Valsalva maneuver presurgery. Rotated/vertical bladder neck descent and urethral funneling diagnoses showed concordance of 67-74% in the direct comparison of patients; the estimation of the concordance indicated poorer outcomes with 50-72%. CONCLUSIONS Metric information on urethral length from dMRI is comparable to that from introital ultrasound. dMRI is more advantageous in cases with an extended organ prolapse. At present, dMRI does not give the same diagnosis on bladder neck changes as introital ultrasound does.
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Affiliation(s)
- C D Alt
- Department of Diagnostic and Interventional Radiology, University Duesseldorf, Medical Faculty, Moorenstrasse 5, 40225, Duesseldorf, Germany
| | - S M Katzenberger
- Department of Obstetrics and Gynecology, Medical School, University of Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Germany.,Hannover Medical School, Clinic of Orthodontics, OE 7730, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - P Hallscheidt
- Department of Diagnostic and Interventional Radiology, University Heidelberg, Medical Faculty, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.,Radiological Department Darmstadt, Academic Teaching Practice, University of Heidelberg Medical Center, Dieburger Str. 29-31, 64287, Darmstadt, Germany
| | - C Sohn
- Department of Obstetrics and Gynecology, Medical School, University of Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Germany
| | - H U Kauczor
- Department of Diagnostic and Interventional Radiology, University Heidelberg, Medical Faculty, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - S B Eickhoff
- Institute of Neuroscience and Medicine (INM-7), Juelich Research Centre, 52428, Juelich, Germany.,Institute of Systems Neuroscience, Heinrich Heine University, 40225, Dusseldorf, Germany
| | - K A Brocker
- Department of Obstetrics and Gynecology, Medical School, University of Heidelberg, Im Neuenheimer Feld 440, 69120, Heidelberg, Germany.
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13
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Vollherbst DF, Otto R, Hantz M, Ulfert C, Kauczor HU, Bendszus M, Sommer CM, Möhlenbruch MA. Investigation of a New Version of the Liquid Embolic Agent PHIL with Extra-Low-Viscosity in an Endovascular Embolization Model. AJNR Am J Neuroradiol 2018; 39:1696-1702. [PMID: 30093480 DOI: 10.3174/ajnr.a5750] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/12/2018] [Indexed: 01/08/2023]
Abstract
BACKGROUND AND PURPOSE The type and composition of an embolic agent have a relevant influence on the performance of endovascular embolization. The aim of this study was to investigate a new version of the liquid embolic agent precipitating hydrophobic injectable liquid (PHIL) with extra-low-viscosity in an in vivo embolization model. MATERIALS AND METHODS Twenty-four embolization procedures were performed in the porcine rete mirabile. Eight embolizations were performed with PHIL 25% low viscosity, Squid 12, and standard PHIL 25%, respectively. Procedure time, required volume of embolic agent, visibility of the embolic agent, embolization control, embolization extent (ie, penetration of the rete mirabile), amount of reflux, and degree of embolization distal to the rete mirabile were assessed. RESULTS All embolic agents were adequately visible. The embolization extent was not significantly different among the 3 investigated agents; however, there was a tendency toward a higher embolization extent for PHIL 25% low viscosity (median embolization extent: 88% [PHIL 25% low viscosity]; 65% [Squid 12]; 60% [PHIL 25%]; P = .146). The amount of reflux was significantly lower for the extra-low-viscosity agents PHIL 25% low viscosity and Squid 12 compared with the standard PHIL 25% (median reflux distance: 8 mm [PHIL 25% low viscosity]; 6 mm [Squid 12]; 17 mm [PHIL 25%]; P = .011). All other embolization features did not differ among agents. CONCLUSIONS PHIL 25% low viscosity is a promising liquid embolic agent for endovascular embolization, featuring effective distal penetration, adequate visibility, a low amount of reflux, and good flow control.
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Affiliation(s)
- D F Vollherbst
- From the Department of Neuroradiology (D.F.V., R.O., M.H., C.U., M.B., M.A.M.)
- Clinic for Diagnostic and Interventional Radiology (D.F.V., H.U.K., C.M.S.), Heidelberg University Hospital, Heidelberg, Germany
| | - R Otto
- From the Department of Neuroradiology (D.F.V., R.O., M.H., C.U., M.B., M.A.M.)
| | - M Hantz
- From the Department of Neuroradiology (D.F.V., R.O., M.H., C.U., M.B., M.A.M.)
| | - C Ulfert
- From the Department of Neuroradiology (D.F.V., R.O., M.H., C.U., M.B., M.A.M.)
| | - H U Kauczor
- Clinic for Diagnostic and Interventional Radiology (D.F.V., H.U.K., C.M.S.), Heidelberg University Hospital, Heidelberg, Germany
| | - M Bendszus
- From the Department of Neuroradiology (D.F.V., R.O., M.H., C.U., M.B., M.A.M.)
| | - C M Sommer
- Clinic for Diagnostic and Interventional Radiology (D.F.V., H.U.K., C.M.S.), Heidelberg University Hospital, Heidelberg, Germany
- Clinic for Diagnostic and Interventional Radiology (C.M.S.), Klinikum Stuttgart, Stuttgart, Germany
| | - M A Möhlenbruch
- From the Department of Neuroradiology (D.F.V., R.O., M.H., C.U., M.B., M.A.M.)
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14
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Sommer CM, Harms A, Do TD, Gockner TL, Kriegsmann M, Schlett CL, Holzer K, Vollherbst D, Warth A, Pereira PL, Eichwald V, Jugold M, Kauczor HU, Flechsig P. Inherently Radiopaque Narrow-Size-Calibrated Microspheres: Proof of Principle in a Pig Embolization Model. Cardiovasc Intervent Radiol 2018; 41:1404-1411. [DOI: 10.1007/s00270-018-1986-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 05/11/2018] [Indexed: 02/06/2023]
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15
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Brandelik SC, Krzykalla J, Hielscher T, Hillengass J, Kloth JK, Kauczor HU, Weber MA. [Focal lesions in whole-body MRI in multiple myeloma : Quantification of tumor mass and correlation with disease-related parameters and prognosis]. Radiologe 2017; 58:72-78. [PMID: 28905085 DOI: 10.1007/s00117-017-0299-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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] [Indexed: 01/12/2023]
Abstract
BACKGROUND AND OBJECTIVES In this study, we evaluated methods of quantification of tumor mass in whole-body MRI (wb-MRI) in multiple myeloma and correlated these with disease-related parameters in serum and bone marrow. MATERIALS AND METHODS We retrospectively evaluated wb-MRIs of 52 patients with focal infiltration pattern and a total of 700 focal lesions (subsequently called lesions). We determined the longest diameter (LD), the segmented volume (SV), and the morphology (spherical or non-spherical). We correlated total number/volume of the lesions with clinical parameters and prognosis and furthermore LD with SV. After that we analyzed the agreement of SV and estimated volume (EV) using the volume formula of a sphere based on LD. RESULTS Results showed no significant correlations of total number/volume with prognosis or clinical parameters. The latter were situated predominantly in the normal range. Furthermore, 10% of lesions were spherical. SV and LD correlated significantly in single lesions and on patient level. SV was in lesions <6 cm3 systematically larger and in lesions ≥6 cm3 smaller than EV. In 95%, we found in small lesions a deviation of EV versus SV from +0.9 cm3 to -4.6 cm3 and in large lesions from +160 cm3 to -111 cm3 (EV-SV). CONCLUSIONS Quantification of tumor mass in the focal infiltration pattern is performed more accurately by volumetry than LD due to the predominant existence of non-spherical lesions. The patient cohort with clinical parameters predominantly in the normal range is distributed to ISS stage I and partly pretreated, a fact that makes interpretation of absent correlations more difficult. Consider also a variation in activitiy of lesions and a diffuse infiltration not detectable by MRI.
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Affiliation(s)
- S C Brandelik
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland.
| | - J Krzykalla
- Biostatistik, Deutsches Krebsforschungszentrum (dkfz), Heidelberg, Deutschland
| | - T Hielscher
- Biostatistik, Deutsches Krebsforschungszentrum (dkfz), Heidelberg, Deutschland
| | - J Hillengass
- Hämatologie und Onkologie, Universitätsklinikum Heidelberg, Heidelberg, Deutschland
| | - J K Kloth
- Radiologie Löbau, Löbau, Deutschland
| | - H U Kauczor
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - M A Weber
- Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
- Diagnostische und Interventionelle Radiologie, Universitätsmedizin Rostock, Rostock, Deutschland
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16
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Sommer CM, Vollherbst DF, Richter GM, Kauczor HU, Pereira PL. [What can/should be treated in kidney tumors and when]. Radiologe 2017; 57:80-89. [PMID: 28130580 DOI: 10.1007/s00117-016-0202-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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
CLINICAL/METHODICAL ISSUE In the treatment of localized renal cell carcinoma, the lack of randomization in controlled trials on thermal ablation is a major limitation. The latter leads to significant study bias and it ultimately remains unclear whether the improved overall survival in favor of partial nephrectomy can actually be attributed to the treatment method. STANDARD RADIOLOGICAL METHODS For T1a (≤4 cm) renal cell carcinoma without lymph node and distant metastases, excellent technical and clinical results have been described after imaging-guided radiofrequency ablation and cryoablation. METHODICAL INNOVATIONS Low major complication rates, preservation of renal function and three-dimensional confirmation of negative ablation margins (A0 ablation) are the advantages of computed tomography (CT)-guided thermal ablation. PERFORMANCE According to the results of controlled (non-randomized) trials on T1a renal cell cancer, the cancer-specific survival rates are comparable between ablative and surgical techniques. ACHIEVEMENTS It is high time for prospective randomized controlled trials to define the actual value of percutaneous thermal ablation and partial nephrectomy in the treatment of T1a renal cell carcinoma. PRACTICAL RECOMMENDATIONS Apart from localized renal cell carcinoma, angiomyolipoma and oncocytoma can be treated by thermal ablation. Transarterial embolization extends the radiological spectrum for the treatment of renal tumors, either as complementary embolization (e. g. before thermal ablation of T1a and T1b renal cell carcinoma), prophylactic embolization (e. g. angiomyolipoma >6 cm), preoperative embolization (e. g. before laparoscopic partial nephrectomy) or palliative embolization (e. g. in patients with symptomatic macrohematuria due to renal cell carcinoma).
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Affiliation(s)
- C M Sommer
- Klinik für Diagnostische und Interventionelle Radiologie, Radiologische Klinik, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland. .,Klinik für Diagnostische und Interventionelle Radiologie, Klinikum Stuttgart, Katharinenhospital, Stuttgart, Deutschland.
| | - D F Vollherbst
- Abteilung Neuroradiologie, Radiologische Klinik, Universitätsklinikum Heidelberg, Heidelberg, Deutschland
| | - G M Richter
- Klinik für Diagnostische und Interventionelle Radiologie, Klinikum Stuttgart, Katharinenhospital, Stuttgart, Deutschland
| | - H U Kauczor
- Klinik für Diagnostische und Interventionelle Radiologie, Radiologische Klinik, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - P L Pereira
- Klinik für Radiologie, minimal-invasive Therapien und Nuklearmedizin, SLK-Kliniken Heilbronn GmbH, Heilbronn, Deutschland
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Radeleff B, Sumkauskaite M, Kortes N, Gnutzmann D, Mokry T, Kauczor HU, Stampfl U. [Subintimal recanalization. Indications, technique and results]. Radiologe 2016; 56:266-74. [PMID: 26885652 DOI: 10.1007/s00117-016-0078-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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
CLINICAL/METHODICAL ISSUE This article gives an overview of the current importance of so-called subintimal recanalization in the lower extremities. STANDARD RADIOLOGICAL METHODS The primary technical goal of endovascular interventions in the lower extremities is the endoluminal restoration of blood circulation from the iliac arteries into the feet. METHODICAL INNOVATIONS If endoluminal recanalization of e.g. high-grade flow-relevant stenoses or chronic total occlusion (CTO) is technically not possible, subintimal recanalization is a promising option and the only remaining minimally invasive alternative. During subintimal recanalization a channel is intentionally generated in the vessel wall (dissection) in order to bypass e. g. a chronic vascular occlusion over as short a distance as possible. PERFORMANCE The technical success rate for subintimal recanalization of CTO of the lower extremities is 65-100 %. Technical failure occurs in approximately 25 % using the catheter and wire technique and is caused in most cases by difficulties in reaching the true lumen after the subintimal passage (the so-called re-entry). ACHIEVEMENTS Compared to conventional subintimal recanalization, in recent years so-called re-entry devices have expanded the technical possibilities and depending on the medical experience and training level of the physician, provide an improvement in the technical success rate, a lower complication rate, a reduction of fluoroscopy time and the amount of necessary contrast medium but also result in higher costs. PRACTICAL RECOMMENDATIONS Subintimal recanalization, whether carried out conventionally with a catheter and wire or using re-entry devices, of high-grade stenoses or CTO in the lower extremities provides a high technical success rate but requires an experienced and trained physician who is capable of operating the elaborate materials and mastering any possible complications.
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Affiliation(s)
- B Radeleff
- Sektion für Interventionelle Radiologie, Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland.
| | - M Sumkauskaite
- Sektion für Interventionelle Radiologie, Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - N Kortes
- Sektion für Interventionelle Radiologie, Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - D Gnutzmann
- Sektion für Interventionelle Radiologie, Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - T Mokry
- Sektion für Interventionelle Radiologie, Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - H U Kauczor
- Sektion für Interventionelle Radiologie, Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - U Stampfl
- Sektion für Interventionelle Radiologie, Diagnostische und Interventionelle Radiologie, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
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Rehm J, Veith S, Akbar M, Kauczor HU, Weber MA. CT-Guided Percutaneous Spine Biopsy in Suspected Infection or Malignancy: A Study of 214 Patients. ROFO-FORTSCHR RONTG 2016; 188:1156-1162. [PMID: 27907940 DOI: 10.1055/s-0042-116233] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Purpose: To retrospectively determine the effectiveness and accuracy of CT-guided percutaneous biopsy of malignant and inflammatory bone lesions of the spine and to assess the reliability of pre-biopsy CT and MRI. Materials and Methods: 214 patients with lesions of the spine, which were suspicious either for being malignant or inflammatory, underwent CT-guided biopsy for pathological and/or microbiological detection. Biopsy samples were sent for histological examination in 128/214 patients, for microbiological analysis in 17/214 patients and for both analyses in 69/214 patients. Retrospectively, the diagnostic accuracy and sensitivity/specificity of the pre-interventional imaging (CT and MRI) were determined. In addition, the influence of the biopsy on subsequent patient management was assessed. Results: The accuracy was 94.4 % for histopathological analysis and 97.7 % for microbiological analysis. In 25 % of cases the microbiological analysis revealed an underlying pathogen that was not significantly affected by pre-biopsy antibiotic therapy. The sensitivity/specificity of the pre-biopsy cross-sectional imaging concerning suspected malignancy was 69 %/78 %. For suspected infection, the sensitivity/specificity of pre-biopsy imaging was 81 %/44 %. In 52 % of all cases, the biopsy result changed subsequent patient management. Conclusion: Percutaneous CT-guided spine biopsy is a useful and reliable diagnostic procedure to establish a definitive diagnosis but with a relatively low yield of microorganisms in the case of infection. Key Points: • CT-guided spine biopsy is an accurate and reliable procedure in case of infection and tumour.• The results of the CT-guided spine biopsy have a significant influence on the subsequent patient management.• Pathogen recovery-rate in case of infection is moderate but not significantly affected by prebiopsy antibiotic therapy. Citation Format: • Rehm J, Veith S, Akbar M et al. CT-Guided Percutaneous Spine Biopsy in Suspected Infection or Malignancy: A Study of 214 Patients. Fortschr Röntgenstr 2016; 188: 1156 - 1162.
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Affiliation(s)
- J Rehm
- Institute of Diagnostic and Interventional Radiology, Universitiy of Heidelberg, Germany
| | - S Veith
- Institute of Diagnostic and Interventional Radiology, Universitiy of Heidelberg, Germany
| | - M Akbar
- Department of Orthopaedic Surgery and Rehabilitation Medicine, University of Heidelberg, Germany
| | - H U Kauczor
- Institute of Diagnostic and Interventional Radiology, Universitiy of Heidelberg, Germany
| | - M A Weber
- Institute of Diagnostic and Interventional Radiology, Universitiy of Heidelberg, Germany
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Vollherbst D, Bertheau R, Kauczor HU, Radeleff BA, Pereira PL, Sommer CM. Erratum: Treatment Failure After Image-Guided Percutaneous Radiofrequency Ablation (RFA) of Renal Tumors - A Systematic Review with Description of Type, Frequency, Risk Factors and Management. ROFO-FORTSCHR RONTG 2016; 189:e1. [PMID: 27737483 DOI: 10.1055/s-0035-1567133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- D Vollherbst
- Department of Neuroradiology, University Hospital Heidelberg, Heidelberg, Germany
| | - R Bertheau
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - H U Kauczor
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - B A Radeleff
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - P L Pereira
- Clinic for Radiology, Minimally-invasive Therapies and Nuclear Medicine, SLK-Kliniken, Heilbronn, Germany
| | - C M Sommer
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany.,Clinic for Diagnostic and Interventional Radiology, Klinikum Stuttgart, Stuttgart, Germany
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20
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Leutz P, Wielpütz MO, Kauczor HU, Weinheimer O, Skornitzke S, Pahn G, Stiller W, Puderbach M. Influence of Exposure Parameters and Iterative Reconstruction on MDCT-based Lung Densitometry – An ex vivo Phantom Study. Pneumologie 2016. [DOI: 10.1055/s-0036-1584640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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21
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Jobst B, Melzig C, Biederer J, Burmester K, Triphan S, Schliebus J, Fellhauer I, Karch A, Heussel CP, Kauczor HU. MRI and CT phenotyping of 600 subjects from the German COPD trial COSYCONET: study concept and current status. Pneumologie 2016. [DOI: 10.1055/s-0036-1584643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Fritz F, Skornitzke S, Hackert T, Kauczor HU, Stiller W, Grenacher L, Klauss M. Dual-Energy Perfusion-CT in Recurrent Pancreatic Cancer - Preliminary Results. ROFO-FORTSCHR RONTG 2016; 188:559-65. [PMID: 27224576 DOI: 10.1055/s-0042-105765] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE To evaluate the diagnostic performance of dual energy (DE) perfusion-CT for the differentiation between postoperative soft-tissue formation and tumor recurrence in patients after potentially curative pancreatic cancer resection. MATERIAL AND METHODS 24 patients with postoperative soft-tissue formation in the conventional regular follow-up CT acquisition after pancreatic cancer resection with curative intent were included prospectively. They were examined with a 64-row dual-source CT using a dynamic sequence of 34 DE acquisitions every 1.5 s (80 ml of iodinated contrast material, 370 mg/ml, flow rate 5 ml/s). Weighted average (linearly blended M0.5) 120kVp-equivalent dual-energy perfusion image data sets were evaluated with a body-perfusion CT tool (see above) for estimating blood flow, permeability, and blood volume. Diagnosis was confirmed by histological study (n = 4) and by regular follow-up. RESULTS Final diagnosis was local recurrence of pancreatic cancer in 15 patients and unspecific postoperative tissue formation in 9 patients. The blood-flow values for recurrence tissue trended to be lower compared to postoperative tissue formation with 16.6 ml/100 ml/min and 24.7 ml/100 ml/min, respectively for weighted average 120kVp-equivalent image data, which was not significant (n.s.) (p = 0.06, significance level 0.05). Permeability- and blood-volume values were only slightly lower in recurrence tissue (n.s.). CONCLUSION DE perfusion-CT is feasible in patients after pancreatic cancer resection and a promising functional imaging technique. As only a trend for lower perfusion values in local recurrence compared to unspecific postoperative alterations was found, the perfusion differences are not yet sufficient to differentiate between malignancy and unspecific postoperative alterations for this new technique. Further studies and technical improvements are needed to generate reliable data for this clinically highly relevant differentiation. KEY POINTS • DE Perfusion CT is feasible in patients after pancreatic cancer resection.• While reliable differentiation of unspecific postoperative tissue formation from recurrent malignancy cannot be achieved yet, it is within reach.• DE Perfusion CT has the potential to overcome todays limitations of pure morphological diagnosis of recurrent pancreatic cancer. Citation Format: • Fritz F, Skornitzke S, Hackert T et al. Dual-Energy Perfusion-CT in Recurrent Pancreatic Cancer - Preliminary RESULTS. Fortschr Röntgenstr 2016; 188: 559 - 565.
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Affiliation(s)
- F Fritz
- Clinic of Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - S Skornitzke
- Clinic of Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - T Hackert
- Clinic of Surgery, University of Heidelberg, Germany
| | - H U Kauczor
- Clinic of Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - W Stiller
- Clinic of Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - L Grenacher
- Diagnostic Imaging Center, Diagnostik München, Germany
| | - M Klauss
- Clinic of Diagnostic and Interventional Radiology, University of Heidelberg, Germany
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Rehnitz C, Klaan B, von Stillfried F, Amarteifio E, Burkholder I, Kauczor HU, Weber MA. Comparison of Modern 3D and 2D MR Imaging Sequences of the Wrist at 3 Tesla. ROFO-FORTSCHR RONTG 2016; 188:753-62. [PMID: 27139176 DOI: 10.1055/s-0042-104512] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE To compare the image quality of modern 3 D and 2 D sequences for dedicated wrist imaging at 3 Tesla (T) MRI. MATERIALS AND METHODS At 3 T MRI, 18 patients (mean age: 36.2 years) with wrist pain and 16 healthy volunteers (mean age: 26.4 years) were examined using 2 D proton density-weighted fat-saturated (PDfs), isotropic 3 D TrueFISP, 3 D MEDIC, and 3 D PDfs SPACE sequences. Image quality was rated on a five-point scale (0 - 4) including overall image quality (OIQ), visibility of important structures (cartilage, ligaments, TFCC) and degree of artifacts. Signal-to-noise ratios (SNR) and contrast-to-noise ratios (CNR) of cartilage/bone/muscle/fluid as well as the mean overall SNR/CNR were calculated using region-of-interest analysis. ANOVA, paired t-, and Wilcoxon-signed-rank tests were applied. RESULTS The image quality of all tested sequences was superior to 3 D PDfs SPACE (p < 0.01). 3 D TrueFISP had the highest combined cartilage score (mean: 3.4) and performed better in cartilage comparisons against 3 D PDfs SPACE in both groups and 2 D PDfs in volunteers (p < 0.05). 3 D MEDIC performed better in 7 of 8 comparisons (p < 0.05) regarding ligaments and TFCC. 2 D PDfs provided constantly high scores. The mean overall SNR/CNR for 2 D PDfs, 3 D PDfs SPACE, 3 D TrueFISP, and 3 D MEDIC were 68/65, 32/27, 45/47, and 57/45, respectively. 2 D PDfs performed best in most SNR/CNR comparisons (p < 0.05) and 3 D MEDIC performed best within the 3 D sequences (p < 0.05). CONCLUSION Except 3 D PDfs SPACE, all tested 3 D and 2 D sequences provided high image quality. 3 D TrueFISP was best for cartilage imaging, 3 D MEDIC for ligaments and TFCC and 2 D PDfs for general wrist imaging. KEY POINTS • 3 D TrueFISP is recommended for cartilage imaging of the wrist at 3 T.• 3 D MEDIC is recommended for ligaments and TFCC.• Robust 2 D PDfs should be used in routine protocols. 3 D sequences may be added depending on the clinical question.• 3 D PDfs SPACE is currently inferior. Citation Format: • Rehnitz C, Klaan B, von Stillfried F et al. Comparison of Modern 3D and 2D MR Imaging Sequences of the Wrist at 3 Tesla. Fortschr Röntgenstr 2016; 188: 753 - 762.
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Affiliation(s)
- C Rehnitz
- Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - B Klaan
- Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - F von Stillfried
- Department for Orthopedics, Traumatology and Paraplegiology, University of Heidelberg, Germany
| | - E Amarteifio
- Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - I Burkholder
- Department of Nursing and Health, University of Applied Sciences of the Saarland, Saarbruecken, Germany
| | - H U Kauczor
- Diagnostic and Interventional Radiology, University of Heidelberg, Germany
| | - M A Weber
- Diagnostic and Interventional Radiology, University of Heidelberg, Germany
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Wielpütz MO, Eichinger M, Biederer J, Wege S, Stahl M, Sommerburg O, Mall MA, Kauczor HU, Puderbach M. Imaging of Cystic Fibrosis Lung Disease and Clinical Interpretation. ROFO-FORTSCHR RONTG 2016; 188:834-45. [PMID: 27074425 DOI: 10.1055/s-0042-104936] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
UNLABELLED Progressive lung disease in cystic fibrosis (CF) is the life-limiting factor of this autosomal recessive genetic disorder. Increasing implementation of CF newborn screening allows for a diagnosis even in pre-symptomatic stages. Improvements in therapy have led to a significant improvement in survival, the majority now being of adult age. Imaging provides detailed information on the regional distribution of CF lung disease, hence longitudinal imaging is recommended for disease monitoring in the clinical routine. Chest X-ray (CXR), computed tomography (CT) and magnetic resonance imaging (MRI) are now available as routine modalities, each with individual strengths and drawbacks, which need to be considered when choosing the optimal modality adapted to the clinical situation of the patient. CT stands out with the highest morphological detail and has often been a substitute for CXR for regular severity monitoring at specialized centers. Multidetector CT data can be post-processed with dedicated software for a detailed measurement of airway dimensions and bronchiectasis and potentially a more objective and precise grading of disease severity. However, changing to CT was inseparably accompanied by an increase in radiation exposure of CF patients, a young population with high sensitivity to ionizing radiation and lifetime accumulation of dose. MRI as a cross-sectional imaging modality free of ionizing radiation can depict morphological hallmarks of CF lung disease at lower spatial resolution but excels with comprehensive functional lung imaging, with time-resolved perfusion imaging currently being most valuable. KEY POINTS • Hallmarks are bronchiectasis, mucus plugging, air trapping, perfusion abnormalities, and emphysema.• Imaging is more sensitive to disease progression than lung function testing.• CT provides the highest morphological detail but is associated with radiation exposure.• MRI shows comparable sensitivity for morphology but excels with additional functional information.• MRI sensitively depicts reversible abnormalities such as mucus plugging and perfusion abnormalities. Citation Format: • Wielpütz MO, Eichinger M, Biederer J et al. Imaging of Cystic Fibrosis Lung Disease and Clinical Interpretation. Fortschr Röntgenstr 2016; 188: 834 - 845.
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Affiliation(s)
- M O Wielpütz
- Department of Diagnostic and Interventional Radiology, Subdivision of Pulmonary Imaging, University Hospital of Heidelberg, Heidelberg, Germany
| | - M Eichinger
- Department of Diagnostic and Interventional Radiology, Subdivision of Pulmonary Imaging, University Hospital of Heidelberg, Heidelberg, Germany
| | - J Biederer
- Department of Diagnostic and Interventional Radiology, Subdivision of Pulmonary Imaging, University Hospital of Heidelberg, Heidelberg, Germany
| | - S Wege
- Department of Pulmonology and Respiratory Medicine, Cystic Fibrosis Center, Thoraxklinik at the University Hospital of Heidelberg, Heidelberg, Germany
| | - M Stahl
- Translational Lung Research Center Heidelberg (TLRC), Member of the German Lung Research Center (DZL), Heidelberg, Germany
| | - O Sommerburg
- Translational Lung Research Center Heidelberg (TLRC), Member of the German Lung Research Center (DZL), Heidelberg, Germany
| | - M A Mall
- Translational Lung Research Center Heidelberg (TLRC), Member of the German Lung Research Center (DZL), Heidelberg, Germany
| | - H U Kauczor
- Department of Diagnostic and Interventional Radiology, Subdivision of Pulmonary Imaging, University Hospital of Heidelberg, Heidelberg, Germany
| | - M Puderbach
- Department of Diagnostic and Interventional Radiology, Subdivision of Pulmonary Imaging, University Hospital of Heidelberg, Heidelberg, Germany
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Lorenz J, Bals R, Ewert R, Heussel CP, Kauczor HU, Randerath W, Steinkamp G, Watz H, Worth H. [Expert meeting obstructive airway disease measuring and evaluating in COPD]. Pneumologie 2015; 69:521-33. [PMID: 26335896 DOI: 10.1055/s-0034-1392787] [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: 10/23/2022]
Abstract
This report gives an overview on the contributions presented in an expert meeting in February, 2015. They deal with the analysis and evaluation of the multiple dimensions of COPD. This complex disease not only interferes with pulmonary mechanics and gas exchange, but also with cardiopulmonary crosstalk and the ventilator pump. A bulk of inflammatory and microbial activity develops during the progression of disease. As a consequence, systemic effects on muscles, metabolism and psyche develop.The sections consider the value of multiple endpoints in clinical research. Quantifiable parameters of lung mechanics and gas exchange, of exercise tolerance and biomarkers improve the measurability of effects in interventions. However, do we really know in a biological sense what we are measuring? What conclusions can we draw in terms of prognosis?Vice versa, we have to look into the origin and meaning of integrative endpoints e.g. quality or life, dyspnoea and spontaneous physical activity. As a new dimension, the clinical significance of morphological findings in HRCT and MRT is analyzed.
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Affiliation(s)
- J Lorenz
- Klinik für Pneumologie, Internistische Intensivmedizin, Infektiologie und Schlafmedizin, Klinikum Lüdenscheid
| | - R Bals
- Klinik für Pneumologie, Allergologie, Beatmungsmedizin, Universitätsklinikum des Saarlandes Homburg/Saar
| | - R Ewert
- Universitätsmedizin Greifswald, Klinik Innere Medizin B, Bereich Pneumologie, Internistische Intensivmedizin
| | - C P Heussel
- Diagnostische und Interventionelle Radiologie und Nuklearmedizin, Thoraxklinik am Universitätsklinikum Heidelberg
| | - H U Kauczor
- Translational Lung Research Center Heidelberg (TLRC-H), Mitglied im Deutschen Zentrum für Lungenforschung (DZL)
| | - W Randerath
- Klinik für Pneumologie und Allergologie, Krankenhaus Bethanien, Solingen
| | - G Steinkamp
- Medizinisch-wissenschaftliches Publizieren, Schwerin
| | - H Watz
- Pneumologisches Forschungsinstitut an der LungenClinic Grosshansdorf
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Hansen J, Wielpütz MO, Pahn G, Schlemmer HP, Kauczor HU, Stiller W. Quantitative dual-energy computed tomography (DECT) imaging: Evaluation of system performance regarding iodine quantification accuracy. Pneumologie 2015. [DOI: 10.1055/s-0035-1556644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Weinheimer O, Heussel CP, Kauczor HU, Wielpütz MO. Simulation study about the accuracy of advanced airway geometry determination on MDCT using a computer-generated phantom. Pneumologie 2015. [DOI: 10.1055/s-0035-1556645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jobst B, Wielpütz MO, Triphan S, Anjorin A, Ley-Zaporozhan J, Kauczor HU, Biederer J, Ley S, Sedlaczek O. Morpho-functional Lung MRI in COPD: Short-term Test-retest Reliability. Pneumologie 2015. [DOI: 10.1055/s-0035-1556616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Flechsig P, Zabeck H, Heußel CP, Kauczor HU, Haberkorn U, Giesel F. Sequential dynamic PET and dynamic MR imaging in N-staging of lung cancer patients. Pneumologie 2015. [DOI: 10.1055/s-0035-1556660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Triphan S, Wielpütz M, Heussel CP, Biederer J, Kauczor HU, Jakob P, Jobst B. Echo-time dependence of observed lung T1 in COPD patients: preliminary results. Pneumologie 2015. [DOI: 10.1055/s-0035-1556615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Renz M, Abels B, Quispe G, Wielpütz M, Kohlmann P, Puderbach M, Dinkel J, Eichinger M, Herth F, Hoffmann H, Kauczor HU, Heußel CP. Dynamic contrast-enhanced MRI Perfusion of the Lung – Feasibility and Accuracy in Patients with COPD, lung cancer and pulmonary embolism. Pneumologie 2015. [DOI: 10.1055/s-0035-1556618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
CLINICAL/METHODICAL ISSUE Evidence-based therapeutic and diagnostic algorithm for hepatocellular carcinoma. STANDARD RADIOLOGICAL METHODS Ultrasound, computed tomography, magnetic resonance imaging, image-guided percutaneous biopsy, percutaneous thermal ablation and transarterial chemoembolization. METHODICAL INNOVATIONS Diagnostic and therapy of hepatocellular carcinoma according to the official German interdisciplinary guidelines. PERFORMANCE The formulation of the German S3 guidelines on diagnosis and therapy of hepatocellular carcinoma was performed under special consideration of quality indicators and standardized quality improvement methods. ACHIEVEMENTS In 2013 the German S3 guidelines on diagnosis and therapy of hepatocellular carcinoma were published and clinically implemented as part of the nationwide guideline program in oncology of the Deutsche Krebsgesellschaft (German Cancer Society). PRACTICAL RECOMMENDATIONS The German S3 guidelines on diagnosis and therapy of hepatocellular carcinoma have to be considered as the national gold standard with the goal of optimization of patient care.
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Affiliation(s)
- C M Sommer
- Abteilung für Diagnostische und Interventionelle Radiologie, Radiologische Klinik, Universitätsklinikum Heidelberg, Heidelberg, Deutschland
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Sedlaczek O, Wiedemann C, Gruellich C, Klingmüller U, Kauczor HU, Schlemmer HP. Alteration of MR-DWI/ADC before and 24h after induction of chemotherapy in patients with lung cancer. Cancer Imaging 2014. [PMCID: PMC4242758 DOI: 10.1186/1470-7330-14-s1-p34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Demirel S, Chen D, Mei Y, Partovi S, von Tengg-Kobligk H, Dadrich M, Böckler D, Kauczor HU, Müller-Eschner M. Comparison of morphological and rheological conditions between conventional and eversion carotid endarterectomy using computational fluid dynamics – a pilot study. Vascular 2014; 23:474-82. [DOI: 10.1177/1708538114552836] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Purpose: To compare postoperative morphological and rheological conditions after eversion carotid endarterectomy versus conventional carotid endarterectomy using computational fluid dynamics. Basic methods: Hemodynamic metrics (velocity, wall shear stress, time-averaged wall shear stress and temporal gradient wall shear stress) in the carotid arteries were simulated in one patient after conventional carotid endarterectomy and one patient after eversion carotid endarterectomy by computational fluid dynamics analysis based on patient specific data. Principal findings: Systolic peak of the eversion carotid endarterectomy model showed a gradually decreased pressure along the stream path, the conventional carotid endarterectomy model revealed high pressure (about 180 Pa) at the carotid bulb. Regions of low wall shear stress in the conventional carotid endarterectomy model were much larger than that in the eversion carotid endarterectomy model and with lower time-averaged wall shear stress values (conventional carotid endarterectomy: 0.03–5.46 Pa vs. eversion carotid endarterectomy: 0.12–5.22 Pa). Conclusions: Computational fluid dynamics after conventional carotid endarterectomy and eversion carotid endarterectomy disclosed differences in hemodynamic patterns. Larger studies are necessary to assess whether these differences are consistent and might explain different rates of restenosis in both techniques.
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Affiliation(s)
- S Demirel
- Department of Vascular and Endovascular Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - D Chen
- Department of Biomedical Engineering, School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Y Mei
- Department of Biomedical Engineering, School of Life Science, Beijing Institute of Technology, Beijing, China
| | - S Partovi
- Department of Radiology, University Hospitals Case Medical Center, Case Western Reserve University, Cleveland, USA
| | - H von Tengg-Kobligk
- Institute of Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Inselspital, Bern, Switzerland
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - M Dadrich
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Radiology, German Cancer Research Center (dkfz), Heidelberg, Germany
| | - D Böckler
- Department of Vascular and Endovascular Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - HU Kauczor
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - M Müller-Eschner
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
- Department of Radiology, German Cancer Research Center (dkfz), Heidelberg, Germany
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Tedla M, Golatta M, Stieber A, Rauch G, Marmé F, Schulz S, Harcos A, Schott S, Domschke C, Kauczor HU, Schneeweiss A, Schuetz F, Sohn C, Sinn P, Heil J. Prädiktion einer pathologischen Komplettremission nach neoadjuvanter Chemotherapie bei Brustkrebs mithilfe bildgebender und pathologischer Befunde. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Gockner TL, Zelzer S, Mokry T, Gnutzmann D, Bellemann N, Mogler C, Beierfuß A, Köllensperger E, Germann G, Radeleff BA, Stampfl U, Kauczor HU, Pereira PL, Sommer CM. Sphere-enhanced microwave ablation (sMWA) versus bland microwave ablation (bMWA): technical parameters, specific CT 3D rendering and histopathology. Cardiovasc Intervent Radiol 2014; 38:442-52. [PMID: 25167958 DOI: 10.1007/s00270-014-0964-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 06/30/2014] [Indexed: 11/29/2022]
Abstract
PURPOSE This study was designed to compare technical parameters during ablation as well as CT 3D rendering and histopathology of the ablation zone between sphere-enhanced microwave ablation (sMWA) and bland microwave ablation (bMWA). METHODS In six sheep-livers, 18 microwave ablations were performed with identical system presets (power output: 80 W, ablation time: 120 s). In three sheep, transarterial embolisation (TAE) was performed immediately before microwave ablation using spheres (diameter: 40 ± 10 μm) (sMWA). In the other three sheep, microwave ablation was performed without spheres embolisation (bMWA). Contrast-enhanced CT, sacrifice, and liver harvest followed immediately after microwave ablation. Study goals included technical parameters during ablation (resulting power output, ablation time), geometry of the ablation zone applying specific CT 3D rendering with a software prototype (short axis of the ablation zone, volume of the largest aligned ablation sphere within the ablation zone), and histopathology (hematoxylin-eosin, Masson Goldner and TUNEL). RESULTS Resulting power output/ablation times were 78.7 ± 1.0 W/120 ± 0.0 s for bMWA and 78.4 ± 1.0 W/120 ± 0.0 s for sMWA (n.s., respectively). Short axis/volume were 23.7 ± 3.7 mm/7.0 ± 2.4 cm(3) for bMWA and 29.1 ± 3.4 mm/11.5 ± 3.9 cm(3) for sMWA (P < 0.01, respectively). Histopathology confirmed the signs of coagulation necrosis as well as early and irreversible cell death for bMWA and sMWA. For sMWA, spheres were detected within, at the rim, and outside of the ablation zone without conspicuous features. CONCLUSIONS Specific CT 3D rendering identifies a larger ablation zone for sMWA compared with bMWA. The histopathological signs and the detectable amount of cell death are comparable for both groups. When comparing sMWA with bMWA, TAE has no effect on the technical parameters during ablation.
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Affiliation(s)
- T L Gockner
- Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, INF 110, 69120, Heidelberg, Germany,
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Kauczor HU. Radiologische Diagnose und Therapiestratifizierung der COPD. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Weber MA, Sprengel SD, Omlor G, Lehner B, Kauczor HU, Rehnitz C. Radiofrequenzablation zur Therapie von Osteoidosteomen und Osteoblastomen in der Wirbelsäule – langfristige klinische Erfolgsraten und Techniken zur Protektion angrenzender Nervenwurzeln. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mokry T, Pahn G, Stiller W, Schemmer P, Stampfl U, Kauczor HU, Radeleff B, Sommer C. Dosis-reduzierte CT-Angiografie bei Leberlebendspendern mittels 64-Zeilen CT mit Stellar-Detektoren: Vergleich der Bildqualität bei „Filtered Back Projektion“- und iterativer Rekonstruktion. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Gnutzmann D, Mechel J, Schmitz A, Bellemann N, Sommer CM, Gockner T, Mokry T, Kortes N, Stampfl U, Kauczor HU, Radeleff BA. Vergleich der Plasma- und Gewebekonzentrationskinetik von Irinotecan zweier unterchiedlicher mit Irinotecan beladener Partikel. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hansen J, Wielpütz MO, Pahn G, Kauczor HU, Stiller W. Quantitative Dual-Energy CT Bildgebung: Systemcharakterisierung im Hinblick auf die Genauigkeit der Jodquantifizierung. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schmitz A, Gnutzmann D, Bellemann N, Mokry T, Kortes N, Sommer C, Gotthard D, Weiss KH, Stampfl U, Kauczor HU, Radeleff B. Erste Erfahrungen mit der superselektiven TANDEM® TACE in Heidelberg. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hoegen P, Müller-Eschner M, Schalck S, Unterhinninghofen R, Geisbüsch P, Kauczor HU, Tengg-Kobligk HV. Endovaskuläre Therapie (TEVAR) bei Typ-B-Aortendissektionen: In vivo Konfiguration von Stentgrafts postinterventionell und im Follow-Up im Vergleich zu Herstellerangaben. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Skornitzke S, Fritz F, Klauß M, Pahn G, Grenacher L, Kauczor HU, Stiller W. Untersuchung der Effektivität von rigiden und deformierenden Algorithmen zur Bewegungskorrektur für die CT-Perfusionsmessung für abdominelle Organe unter Einfluss der Atembewegung. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Vollherbst D, Fritz S, Zelzer S, Wachter MF, Bellemann N, Gockner T, Mokry T, Gnutzmann D, Schmitz A, Aulmann S, Stampfl U, Pereira PL, Kauczor HU, Werner J, Radeleff BA, Sommer CM. Transarterielle Chemoembolisation (TACE) in Kombination mit irreversibler Elektroporation (IRE): Eine experimentelle Machbarkeitsstudie zur perkutanen Elektrochemotherapie in der Leber. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Weber MA, Sprengel SD, Lehner B, Ewerbeck V, Kauczor HU, Rehnitz C. Radiofrequenzablation zur Therapie von Osteoblastomen – Langfristiger klinischer Erfolg und dezidierte Techniken der Ablation. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mayer JL, Lehners N, Egerer G, Kauczor HU, Heußel CP. CT-morphological characterization of respiratory syncytial virus (RSV) pneumonia in immune-compromised adults. ROFO-FORTSCHR RONTG 2014; 186:686-92. [PMID: 24557598 DOI: 10.1055/s-0033-1356353] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE Characterization and follow-up evaluation of chest CT of RSV pneumonia in immune-compromised adults during a seasonal epidemic. MATERIALS AND METHODS Retrospective analysis of 132 chest CT examinations of 51 adult immune-compromised patients (29 m/22f, Ø58 years) with clinical signs of pneumonia and positive RSV test in winter 2011/2012. Two experienced chest radiologists evaluated the morphology (bronchial wall thickening, tree-in-bud, nodules, halo, ground-glass opacities, consolidations, pleural fluid) of the CT scans by consensus. RESULTS Pathological findings were in 86 % of the chest CT scans: Areas of ground-glass attenuation in 64 %, consolidations in 56 %, nodules in 55 % (Ø 8 mm in maximal diameter, with halo in 71 %), pleural fluid in 44 % (Ø 2 cm), tree-in-bud in 36 %, bronchial wall thickening in 27 % and more than one morphological finding in 72 %. There were no pathological CT findings in 14 % of patients with clinical symptoms of pneumonia because these patients did not undergo follow-up. Radiological progression was found in 45 % of patients and regression in 33 % in follow-up examinations. In 37 % an additional examination of the paranasal sinuses was performed and showed sinusitis in 63 % of cases. 90 % of the patients had sinusitis as well as pneumonia. In addition to RSV, a further pathogenic agent was found in bronchoalveolar lavage of five patients (Aspergillus spec., herpes simplex virus, Pseudomonas aeruginosa). CONCLUSION The most characteristic signs in chest CT scans were at the beginning of pneumonia with nodules and tree-in-bud often combined with bronchial wall thickening. The following CT scans showed characteristic but not pathognomonic chest CT findings of RSV pneumonia. These morphological findings should be recognized seasonally (winter) especially at the beginning of the case of pneumonia. RSV-associated additional sinusitis is probably common and should be noticed.
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Affiliation(s)
- J L Mayer
- Diagnostic and Interventional Radiology, University Hospital Heidelberg
| | - N Lehners
- Internal Medicine V of Hematology, Oncology and Rheumatology, University Hospital Heidelberg
| | - G Egerer
- Internal Medicine V of Hematology, Oncology and Rheumatology, University Hospital Heidelberg
| | - H U Kauczor
- Diagnostic and Interventional Radiology, University Hospital Heidelberg
| | - C P Heußel
- Diagnostic and Interventional Radiology with Nuclear Medicine, Thoracic Hospital at Univerity Hospital Heidelberg
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Rengier F, Delles M, Jeong YJ, Tengg-Kobligk HV, Kauczor HU, Unterhinninghofen R, Ley S, Eichhorn J. Noninvasive 4D Pressure Difference Mapping Derived from 4D Flow MRI in Patients with Repaired Aortic Coarctation: Comparison with Young Healthy Volunteers. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0033-1354532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Veloza S, Kauczor HU, Stiller W. WE-C-103-01: Attenuation-Based Dynamic CT Bowtie Filtration: Evaluation of Signal Homogenization and Dose Reduction by Monte-Carlo Simulation. Med Phys 2013. [DOI: 10.1118/1.4815550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Wielpütz MO, Weinheimer O, Eichinger M, Wiebel M, Biederer J, Kauczor HU, Heußel CP, Mall MA, Puderbach M. Densitometrie von Thorax-MDCT bei Zystischer Fibrose - Hinweise auf ein progredientes Lungenemphysem. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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