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Curcio C, Mucciolo G, Roux C, Brugiapaglia S, Scagliotti A, Guadagnin G, Conti L, Longo D, Grosso D, Papotti MG, Hirsch E, Cappello P, Varner JA, Novelli F. PI3Kγ inhibition combined with DNA vaccination unleashes a B-cell-dependent antitumor immunity that hampers pancreatic cancer. J Exp Clin Cancer Res 2024; 43:157. [PMID: 38824552 PMCID: PMC11143614 DOI: 10.1186/s13046-024-03080-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 05/24/2024] [Indexed: 06/03/2024] Open
Abstract
Phosphoinositide-3-kinase γ (PI3Kγ) plays a critical role in pancreatic ductal adenocarcinoma (PDA) by driving the recruitment of myeloid-derived suppressor cells (MDSC) into tumor tissues, leading to tumor growth and metastasis. MDSC also impair the efficacy of immunotherapy. In this study we verify the hypothesis that MDSC targeting, via PI3Kγ inhibition, synergizes with α-enolase (ENO1) DNA vaccination in counteracting tumor growth.Mice that received ENO1 vaccination followed by PI3Kγ inhibition had significantly smaller tumors compared to those treated with ENO1 alone or the control group, and correlated with i) increased circulating anti-ENO1 specific IgG and IFNγ secretion by T cells, ii) increased tumor infiltration of CD8+ T cells and M1-like macrophages, as well as up-modulation of T cell activation and M1-like related transcripts, iii) decreased infiltration of Treg FoxP3+ T cells, endothelial cells and pericytes, and down-modulation of the stromal compartment and T cell exhaustion gene transcription, iv) reduction of mature and neo-formed vessels, v) increased follicular helper T cell activation and vi) increased "antigen spreading", as many other tumor-associated antigens were recognized by IgG2c "cytotoxic" antibodies. PDA mouse models genetically devoid of PI3Kγ showed an increased survival and a pattern of transcripts in the tumor area similar to that of pharmacologically-inhibited PI3Kγ-proficient mice. Notably, tumor reduction was abrogated in ENO1 + PI3Kγ inhibition-treated mice in which B cells were depleted.These data highlight a novel role of PI3Kγ in B cell-dependent immunity, suggesting that PI3Kγ depletion strengthens the anti-tumor response elicited by the ENO1 DNA vaccine.
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Affiliation(s)
- Claudia Curcio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
| | - Gianluca Mucciolo
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
| | - Cecilia Roux
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
| | - Silvia Brugiapaglia
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
| | - Alessandro Scagliotti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
| | - Giorgia Guadagnin
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
| | - Laura Conti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
- Molecular Biotechnology Center, University of Torino, Turin, Italy
| | - Dario Longo
- Institute of Biostructures and Bioimaging (IBB), National Research Council of Italy (CNR), Turin, Italy
| | - Demis Grosso
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
| | - Mauro Giulio Papotti
- Pathology Unit, Department of Medical Sciences, University of Torino, AOU Città Della Salute E Della Scienza Di Torino, Turin, Italy
| | - Emilio Hirsch
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
- Molecular Biotechnology Center, University of Torino, Turin, Italy
| | - Paola Cappello
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy
- Molecular Biotechnology Center, University of Torino, Turin, Italy
| | - Judith A Varner
- Moores Cancer Center, Department of Pathology, University of California, San Diego, CA, USA
| | - Francesco Novelli
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Piazza Nizza 44Bis, 10126, Turin, Italy.
- Molecular Biotechnology Center, University of Torino, Turin, Italy.
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Ansari G, Mirza-Aghazadeh-Attari M, Afyouni S, Mohseni A, Shahbazian H, Kamel IR. Utilization of texture features of volumetric ADC maps in differentiating between serous cystadenoma and intraductal papillary neoplasms. Abdom Radiol (NY) 2024; 49:1175-1184. [PMID: 38378839 DOI: 10.1007/s00261-024-04187-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 01/04/2024] [Accepted: 01/07/2024] [Indexed: 02/22/2024]
Abstract
INTRODUCTION The rising incidence of incidental detection of pancreatic cystic neoplasms has compelled radiologists to determine new diagnostic methods for the differentiation of various kinds of lesions. We aim to demonstrate the utility of texture features extracted from ADC maps in differentiating intraductal papillary mucinous neoplasms (IPMN) from serous cystadenomas (SCA). METHODS This retrospective study was performed on 136 patients (IPMN = 87, SCA = 49) split into testing and training datasets. A total of 851 radiomics features were extracted from volumetric contours drawn by an expert radiologist on ADC maps of the lesions. LASSO regression analysis was used to determine the most predictive set of features and a radiomics score was developed based on their respective coefficients. A hyper-optimized support vector machine was then utilized to classify the lesions based on their radiomics score. RESULTS A total of four Wavelet features (LHL/GLCM/LCM2, HLL/GLCM/LCM2, /LLL/First Order/90percent, /LLL/GLCM/MCC) were selected from all of the features to be included in our classifier. The classifier was optimized by altering hyperparameters and the trained model was applied to the validation dataset. The model achieved a sensitivity of 92.8, specificity of 90%, and an AUC of 0.97 in the training data set, and a sensitivity of 83.3%, specificity of 66.7%, and AUC of 0.90 in the testing dataset. CONCLUSION A support vector machine model trained and validated on volumetric texture features extracted from ADC maps showed the possible beneficence of these features in differentiating IPMNs from SCAs. These results are in line with previous regarding the role of ADC maps in classifying cystic lesions and offers new evidence regarding the role of texture features in differentiation of potentially neoplastic and benign lesions.
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Affiliation(s)
- Golnoosh Ansari
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, MD, 21287, USA
| | - Mohammad Mirza-Aghazadeh-Attari
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, MD, 21287, USA
| | - Shadi Afyouni
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, MD, 21287, USA
| | - Alireza Mohseni
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, MD, 21287, USA
| | - Haneyeh Shahbazian
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, MD, 21287, USA
| | - Ihab R Kamel
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, MD, 21287, USA.
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Tachikawa Y, Hamano H, Chiwata N, Yoshikai H, Ikeda K, Maki Y, Takahashi Y, Koike M. Diffusion weighted imaging combining respiratory triggering and navigator echo tracking in the upper abdomen. MAGMA (NEW YORK, N.Y.) 2024:10.1007/s10334-024-01150-1. [PMID: 38400926 DOI: 10.1007/s10334-024-01150-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/26/2024]
Abstract
OBJECTIVES To evaluate a new motion correction method, named RT + NV Track, for upper abdominal DWI that combines the respiratory triggering (RT) method using a respiration sensor and the Navigator Track (NV Track) method using navigator echoes. MATERIALS AND METHODS To evaluate image quality acquired upper abdominal DWI and ADC images with RT, NV, and RT + NV Track in 10 healthy volunteers and 35 patients, signal-to-noise efficiency (SNRefficiency) and the coefficient of variation (CV) of ADC values were measured. Five radiologists independently performed qualitative image-analysis assessments. RESULTS RT + NV Track showed significantly higher SNRefficiency than RT and NV (14.01 ± 4.86 vs 12.05 ± 4.65, 10.05 ± 3.18; p < 0.001, p < 0.001). RT + NV Track was superior to RT and equal or better quality than NV in CV and visual evaluation of ADC values (0.033 ± 0.018 vs 0.080 ± 0.042, 0.057 ± 0.034; p < 0.001, p < 0.001). RT + NV Track tends to acquire only expiratory data rather than NV, even in patients with relatively rapid breathing, and can correct for respiratory depth variations, a weakness of RT, thus minimizing image quality degradation. CONCLUSION The RT + NV Track method is an efficient imaging method that combines the advantages of both RT and NV methods in upper abdominal DWI, providing stably good images in a short scan time.
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Affiliation(s)
- Yoshihiko Tachikawa
- Division of Radiological Technology, Department of Medical Technology, Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan.
| | - Hiroshi Hamano
- Philips Japan, Philips Building, 2-13-37 Kohnan, Minato-ku, Tokyo, 108-8507, Japan
| | - Naoya Chiwata
- Division of Radiological Technology, Department of Medical Technology, Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Hikaru Yoshikai
- Division of Radiological Technology, Department of Medical Technology, Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Kento Ikeda
- Division of Radiological Technology, Department of Medical Technology, Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Yasunori Maki
- Division of Radiological Technology, Department of Medical Technology, Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Yukihiko Takahashi
- Department of Radiology, Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
| | - Makiko Koike
- Department of Radiology, Karatsu Red Cross Hospital, 2430 Watada, Karatsu, Saga, 847-8588, Japan
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Hoppner J, van Genabith L, Hielscher T, Heger U, Sperling L, Colbatzky T, Gutjahr E, Lang M, Pausch T, Spektor AM, Glatting FM, Liermann J, Hackert T, Kratochwil C, Giesel FL, Haberkorn U, Röhrich M. Comparison of early and late 68Ga-FAPI-46-PET in 33 patients with possible recurrence of pancreatic ductal adenocarcinomas. Sci Rep 2023; 13:17848. [PMID: 37857656 PMCID: PMC10587145 DOI: 10.1038/s41598-023-43049-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 09/18/2023] [Indexed: 10/21/2023] Open
Abstract
Positron emission tomography with 68Gallium (68Ga) labeled inhibitors of fibroblast activation protein (68Ga-FAPI-PET) is a promising imaging technique for patients with recurrent pancreatic ductal adenocarcinomas (PDAC). To date, it is not clear if different acquisition timepoints for 68Ga-FAPI-PET may result in comparable imaging information and if repetitive 68Ga-FAPI-PET imaging may add diagnostic value to single timepoint acquisition for recurrent PDAC. Here we analyzed retrospectively early (20 min p.i.) and late (60 min p.i.) 68Ga-FAPI-PET imaging using FAPI-46 of 33 patients with possible recurrence of PDAC concerning detection rates and uptake over time of local recurrences, metastases, inflammatory lesions of the pancreas, cholestatic lesions of the liver and reactive tissue. 33 patients with histologically confirmed PDAC after complete or partial resection of the pancreas and possible recurrence were examined by 68Ga-FAPI-46-PET acquired 20- and 60-min post injection (p.i.) of the radiotracer. FAPI-positive lesions were classified as local recurrences, metastases, inflammatory lesions of the pancreas (ILP), cholestatic lesions of the liver and reactive tissue based on histology, PET- and CT-morphology and clinical information. Lesions were contoured, and standardized uptake values (SUVmax and SUVmean) and target-to-background ratios (TBR) were analyzed for both acquisition timepoints. In total, 152 FAPI-positive lesions (22 local relapses, 47 metastases, 26 inflammatory lesions of the pancreas, 28 reactive tissues, and 29 cholestatic lesions) were detected. Detection rates for the early and late acquisition of 68Ga-FAPI-46-PET were almost identical except cholestatic lesions, which showed a higher detection rate at early imaging. SUV parameters and TBRs of ILP significantly decreased over time. Cholestatic lesions showed a tendency towards decreasing uptake. All other types of lesions showed relatively stable uptake over time. Early and late acquisition of 68Ga-FAPI-PET results in comparable imaging information in patients with possible recurrence of PDAC. Two timepoint imaging offers additional diagnostic potential concerning differential diagnoses.
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Affiliation(s)
- Jorge Hoppner
- Department of Nuclear Medicine, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Levin van Genabith
- Department of Nuclear Medicine, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Thomas Hielscher
- Department of Biostatistics, German Cancer Research Center, Heidelberg, Germany
| | - Ulrike Heger
- Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Lucas Sperling
- Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Teresa Colbatzky
- Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Ewgenija Gutjahr
- Department of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Matthias Lang
- Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Thomas Pausch
- Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Anna-Maria Spektor
- Department of Nuclear Medicine, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Frederik M Glatting
- Clinical Cooperation Unit Molecular and Radiation Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jakob Liermann
- Department of Radiation Oncology, University Hospital Heidelberg, Heidelberg, Germany
| | - Thilo Hackert
- Department of General, Visceral, and Transplantation Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Clemens Kratochwil
- Department of Nuclear Medicine, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
| | - Frederik L Giesel
- Department of Nuclear Medicine, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- Department of Nuclear Medicine, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Uwe Haberkorn
- Department of Nuclear Medicine, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany
- Clinical Cooperation Unit Nuclear Medicine, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Manuel Röhrich
- Department of Nuclear Medicine, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany.
- Department of Nuclear Medicine, University Hospital Mainz, Langenbeckstraße 1, 55131, Mainz, Germany.
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Liu D, Chen J, Zhang Y, Dai Y, Yao X. Magnetic resonance elastography-derived stiffness: potential imaging biomarker for differentiation of benign and malignant pancreatic masses. Abdom Radiol (NY) 2023; 48:2604-2614. [PMID: 37237155 DOI: 10.1007/s00261-023-03956-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/06/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023]
Abstract
OBJECTIVE This study sought to determine the diagnostic performance of magnetic resonance elastography (MRE) for pancreatic solid masses, compared with diffusion-weighted imaging (DWI) and serum CA19-9, to establish a threshold for differentiating between pancreatic ductal adenocarcinoma (PDAC) and benign tumors in pancreas. MATERIALS AND METHODS Between July 2021 to January 2023, 75 adult patients confirmed with pancreatic solid tumors were enrolled in this prospective and consecutive study. All patients underwent MRE and DWI examinations that were both performed with a spin echo-EPI sequence. Stiffness maps and apparent diffusion coefficient (ADC) maps were generated, with MRE-derived mass stiffness and stiffness ratio (computing as the ratio of mass stiffness to the parenchyma stiffness) and DWI-derived ADC values obtained by placing regions of interest over the focal tumors on stiffness and ADC maps. Further analysis of comparing diagnostic performances was assessed by calculating the area under ROC curves. RESULTS PDAC had significantly higher tumor stiffness [3.795 (2.879-4.438) kPa vs. 2.359 (2.01-3.507) kPa, P = 0.0003], stiffness ratio [1.939 (1.562-2.511) vs. 1.187 (1.031-1.453), P < 0.0001] and serum CA19-9 level [276 (31.73-1055) vs. 10.45 (7.825-14.15), P < 0.0001] than other pancreatic masses. Mass stiffness, stiffness ratio and serum CA19-9 showed good diagnostic performance for differentiation with AUC of 0.7895, 0.8392 and 0.9136 respectively. The sensitivity/specificity/positive predictive value/negative predictive value for differentiating malignant from benign pancreatic tumors with mass stiffness (cutoff, > 2.8211 kPa) and stiffness ratio (cutoff, > 1.5117) were 78.4/66.7/82.9/60% and 77.8/83.3/90.3/65.2% respectively. The combined performance of Mass stiffness, stiffness ratio and serum CA19-9 got an AUC of 0.9758. CONCLUSION MRE holds excellent clinical potential in discriminating pancreatic ductal adenocarcinoma from other pancreatic solid masses according to their mechanical properties.
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Affiliation(s)
- Dingxia Liu
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
- Department of Radiology, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Jiejun Chen
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
- Department of Radiology, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Yunfei Zhang
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
- MR Collaboration, Central Research Institute, United Imaging Healthcare, Shanghai, China
| | - Yongming Dai
- MR Collaboration, Central Research Institute, United Imaging Healthcare, Shanghai, China
| | - Xiuzhong Yao
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China.
- Department of Radiology, Zhongshan Hospital of Fudan University, Shanghai, China.
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Kikuyama M. A Novel Diagnostic Imaging Method for the Early Detection of Pancreatic Cancer. Diagnostics (Basel) 2023; 13:2080. [PMID: 37370975 DOI: 10.3390/diagnostics13122080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) has an extremely poor prognosis, with a survival rate of less than 10% [...].
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Affiliation(s)
- Masataka Kikuyama
- Department of Gastroenterology, Tokyo Women's Medical University, 8-1 Shinjuku-ku, Tokyo 162-8666, Japan
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Eklund MJ, States LJ, Acord MR, Alazraki AL, Behr GG, El-Ali AM, Morin CE, Saigal G, Shet NS, Thacker PG, Trout AT. Imaging of pediatric pancreas tumors: A COG Diagnostic Imaging Committee/SPR Oncology Committee White Paper. Pediatr Blood Cancer 2023; 70 Suppl 4:e29975. [PMID: 36215203 PMCID: PMC10642208 DOI: 10.1002/pbc.29975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 11/10/2022]
Abstract
Primary pancreatic tumors in children are rare with an overall age-adjusted incidence of 0.018 new cases per 100,000 pediatric patients. The most prevalent histologic type is the solid pseudopapillary neoplasm, followed by pancreatoblastoma. This paper describes relevant imaging modalities and presents consensus-based recommendations for imaging at diagnosis and follow-up.
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Affiliation(s)
- Meryle J Eklund
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Lisa J States
- Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Michael R Acord
- Department of Radiology, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Adina L Alazraki
- Departments of Pediatrics and Radiology, Emory University School of Medicine, Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Gerald G Behr
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Alexander M El-Ali
- Department of Radiology, NYU Grossman School of Medicine, New York, New York, USA
| | - Cara E Morin
- Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Gaurav Saigal
- Department of Radiology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Narendra S Shet
- Department of Diagnostic Imaging and Radiology, Children's National Hospital, Washington, District of Columbia, USA
| | - Paul G Thacker
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Andrew T Trout
- Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Kikuyama M, Nakahodo J, Honda G, Suzuki M, Horiguchi SI, Chiba K, Tabata H, Ome Y, Uemura SI, Kawamoto Y, Kamisawa T. Pancreatic duct epithelial malignancy suggested by large focal pancreatic parenchymal atrophy in cystic diseases of the pancreas. Pancreatology 2023:S1424-3903(23)00066-2. [PMID: 37003856 DOI: 10.1016/j.pan.2023.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/23/2023] [Accepted: 03/12/2023] [Indexed: 04/03/2023]
Abstract
BACKGROUND /Objectives: A cystic lesion is common in the pancreas. Focal pancreatic parenchymal atrophy (FPPA) has been reported as a sign of high-grade pancreatic intraepithelial neoplasia/carcinoma in situ (HGP/CIS). Some cystic lesions accompany FPPA. However, the relationship between a cystic lesion, FPPA, and the histopathological background of the pancreatic duct is unknown. METHODS We retrospectively evaluated the data of 98 patients with a cystic lesion who underwent serial pancreatic juice aspiration cytologic examination (SPACE) because of accompanying FPPA, increased size of the cystic lesion, and pancreatic duct stricture at the base. RESULTS The clinical diagnosis of a cystic lesion was intraductal papillary mucinous neoplasia (IPMN) and cysts in 72 (73.5%) and 26 (26.5%) patients, respectively. Ninety of the 98 patients (91.8%) had FPPA. Positive results (adenocarcinoma and suspicion) on SPACE were observed in 56 of all cases (57.1%), 48 of IPMN (66.7%), 8 of cysts (30.8%), and 54 of FPPA (59.3%), and were significantly associated with IPMN (p = 0.002) and the large FPPA (>269.79 mm2,p = 0.0001); moreover, these disorders are considerably related (p = 0.0003). Fifty patients (51.0%) with positive results on SPACE underwent surgery, with the histopathological diagnosis of epithelial malignancy in 42 patients (42.9%, 42/50, 84%). Many cystic lesions clinically diagnosed as IPMN were dilated branches covered by pancreatic intraepithelial neoplasia. CONCLUSIONS Positive results on SPACE were significantly associated with the clinical diagnosis of IPMN and the large FPPA. Moreover, these disorders are significantly related. Surgery owing to positive results could lead to the histopathological diagnosis of HGP/CIS.
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Affiliation(s)
- Masataka Kikuyama
- Department of Gastroenterology, Tokyo Women's Medical Hospital, Tokyo, Japan; Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan.
| | - Jun Nakahodo
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Goro Honda
- Department of Surgery, Tokyo Women's Medical Hospital, Tokyo, Japan
| | - Mizuka Suzuki
- Department of Radiology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | | | - Kazuro Chiba
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Hiroki Tabata
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Yusuke Ome
- Department of Surgery, Tokyo Women's Medical Hospital, Tokyo, Japan
| | | | - Yusuke Kawamoto
- Department of Surgery, Tokyo Women's Medical Hospital, Tokyo, Japan
| | - Terumi Kamisawa
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
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Obara M, Kwon J, Yoneyama M, Ueda Y, Cauteren MV. Technical Advancements in Abdominal Diffusion-weighted Imaging. Magn Reson Med Sci 2023; 22:191-208. [PMID: 36928124 PMCID: PMC10086402 DOI: 10.2463/mrms.rev.2022-0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
Since its first observation in the 18th century, the diffusion phenomenon has been actively studied by many researchers. Diffusion-weighted imaging (DWI) is a technique to probe the diffusion of water molecules and create a MR image with contrast based on the local diffusion properties. The DWI pixel intensity is modulated by the hindrance the diffusing water molecules experience. This hindrance is caused by structures in the tissue and reflects the state of the tissue. This characteristic makes DWI a unique and effective tool to gain more insight into the tissue's pathophysiological condition. In the past decades, DWI has made dramatic technical progress, leading to greater acceptance in clinical practice. In the abdominal region, however, acquiring DWI with good quality is challenging because of several reasons, such as large imaging volume, respiratory and other types of motion, and difficulty in achieving homogeneous fat suppression. In this review, we discuss technical advancements from the past decades that help mitigate these problems common in abdominal imaging. We describe the use of scan acceleration techniques such as parallel imaging and compressed sensing to reduce image distortion in echo planar imaging. Then we compare techniques developed to mitigate issues due to respiratory motion, such as free-breathing, respiratory-triggering, and navigator-based approaches. Commonly used fat suppression techniques are also introduced, and their effectiveness is discussed. Additionally, the influence of the abovementioned techniques on image quality is demonstrated. Finally, we discuss the current and future clinical applications of abdominal DWI, such as whole-body DWI, simultaneous multiple-slice excitation, intravoxel incoherent motion, and the use of artificial intelligence. Abdominal DWI has the potential to develop further in the future, thanks to scan acceleration and image quality improvement driven by technological advancements. The accumulation of clinical proof will further drive clinical acceptance.
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Affiliation(s)
| | | | | | - Yu Ueda
- MR Clinical Science, Philips Japan Ltd
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10
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Tadimalla S, Wang W, Haworth A. Role of Functional MRI in Liver SBRT: Current Use and Future Directions. Cancers (Basel) 2022; 14:cancers14235860. [PMID: 36497342 PMCID: PMC9739660 DOI: 10.3390/cancers14235860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022] Open
Abstract
Stereotactic body radiation therapy (SBRT) is an emerging treatment for liver cancers whereby large doses of radiation can be delivered precisely to target lesions in 3-5 fractions. The target dose is limited by the dose that can be safely delivered to the non-tumour liver, which depends on the baseline liver functional reserve. Current liver SBRT guidelines assume uniform liver function in the non-tumour liver. However, the assumption of uniform liver function is false in liver disease due to the presence of cirrhosis, damage due to previous chemo- or ablative therapies or irradiation, and fatty liver disease. Anatomical information from magnetic resonance imaging (MRI) is increasingly being used for SBRT planning. While its current use is limited to the identification of target location and size, functional MRI techniques also offer the ability to quantify and spatially map liver tissue microstructure and function. This review summarises and discusses the advantages offered by functional MRI methods for SBRT treatment planning and the potential for adaptive SBRT workflows.
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Affiliation(s)
- Sirisha Tadimalla
- Institute of Medical Physics, School of Physics, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia
- Correspondence:
| | - Wei Wang
- Crown Princess Mary Cancer Centre, Sydney West Radiation Oncology Network, Western Sydney Local Health District, Sydney, NSW 2145, Australia
| | - Annette Haworth
- Institute of Medical Physics, School of Physics, Faculty of Science, The University of Sydney, Camperdown, NSW 2006, Australia
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11
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Kurz FT, Schlemmer HP. Imaging in translational cancer research. Cancer Biol Med 2022; 19:j.issn.2095-3941.2022.0677. [PMID: 36476372 PMCID: PMC9724222 DOI: 10.20892/j.issn.2095-3941.2022.0677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This review is aimed at presenting some of the recent developments in translational cancer imaging research, with a focus on novel, recently established, or soon to be established cross-sectional imaging techniques for computed tomography (CT), magnetic resonance imaging (MRI), and positron-emission tomography (PET) imaging, including computational investigations based on machine-learning techniques.
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Affiliation(s)
- Felix T. Kurz
- Department of Radiology, German Cancer Research Center, Heidelberg 69120, Germany,Correspondence to: Felix T. Kurz and Heinz-Peter Schlemmer, E-mail: and
| | - Heinz-Peter Schlemmer
- Department of Radiology, German Cancer Research Center, Heidelberg 69120, Germany,Correspondence to: Felix T. Kurz and Heinz-Peter Schlemmer, E-mail: and
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12
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Rezaeijo SM, Entezari Zarch H, Mojtahedi H, Chegeni N, Danyaei A. Feasibility Study of Synthetic DW-MR Images with Different b Values Compared with Real DW-MR Images: Quantitative Assessment of Three Models Based-Deep Learning Including CycleGAN, Pix2PiX, and DC2Anet. APPLIED MAGNETIC RESONANCE 2022; 53:1407-1429. [DOI: 10.1007/s00723-022-01482-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/21/2022] [Accepted: 05/18/2022] [Indexed: 07/26/2023]
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13
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Stocky/Packed Pancreas: A Case of Focal Drug-Induced Acute Pancreatitis Mimicking Cancer. Tomography 2022; 8:2073-2082. [PMID: 36006072 PMCID: PMC9414187 DOI: 10.3390/tomography8040174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 11/17/2022] Open
Abstract
Drug-induced acute pancreatitis (DIP) is a recognised but underreported entity in the literature. Immunotherapy drugs have been described as one possible emerging cause, although the pathogenic mechanism is still largely unclear. To date, only a few cases have been reported, even if in recent times there is an over-increasing awareness of this pathologic entity. The imaging-based diagnosis of DIP can be difficult to establish, representing a real challenge for a radiologist, especially when the inflammatory disease appears as a focal mass suspicious for a malignancy. Case report: We herein report the case of a 71-year-old man with a known history of partially responsive lung adenocarcinoma subtype with high programmed cell death ligand 1 (PD-L1) expression, who underwent positron emission tomography (PET)/computed tomography (CT) imaging follow-up after one year of immunotherapy. The exam revealed a stocky/packed lesion in the pancreatic body, with increased 18F-fluorodeoxyglucose (FDG) accumulation highly suggestive of pancreatic cancer, which finally was proven to be a DIP induced by immunotherapy. Conclusion: Distinguishing between focal DIP and pancreatic neoplasm is, therefore, crucial for timely therapeutic management and prognostic stratification. A deep knowledge of possible imaging pitfalls coupled with a comprehensive clinical and laboratory assessment is pivotal to avoid any delays in diagnosis.
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Farr KP, Moses D, Haghighi KS, Phillips PA, Hillenbrand CM, Chua BH. Imaging Modalities for Early Detection of Pancreatic Cancer: Current State and Future Research Opportunities. Cancers (Basel) 2022; 14:cancers14102539. [PMID: 35626142 PMCID: PMC9139708 DOI: 10.3390/cancers14102539] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 02/06/2023] Open
Abstract
Simple Summary While survival rates for many cancers have improved dramatically over the last 20 years, patients with pancreatic cancer have persistently poor outcomes. The majority of patients with pancreatic cancer are not suitable for potentially curative surgery due to locally advanced or metastatic disease stage at diagnosis. Therefore, early detection would potentially improve survival of pancreatic cancer patients through earlier intervention. Here, we present clinical challenges in the early detection of pancreatic cancer, characterise high risk groups for pancreatic cancer and current screening programs in high-risk individuals. The aim of this scoping review is to investigate the role of both established and novel imaging modalities for early detection of pancreatic cancer. Furthermore, we investigate innovative imaging techniques for early detection of pancreatic cancer, but its widespread application requires further investigation and potentially a combination with other non-invasive biomarkers. Abstract Pancreatic cancer, one of the most lethal malignancies, is increasing in incidence. While survival rates for many cancers have improved dramatically over the last 20 years, people with pancreatic cancer have persistently poor outcomes. Potential cure for pancreatic cancer involves surgical resection and adjuvant therapy. However, approximately 85% of patients diagnosed with pancreatic cancer are not suitable for potentially curative therapy due to locally advanced or metastatic disease stage. Because of this stark survival contrast, any improvement in early detection would likely significantly improve survival of patients with pancreatic cancer through earlier intervention. This comprehensive scoping review describes the current evidence on groups at high risk for developing pancreatic cancer, including individuals with inherited predisposition, pancreatic cystic lesions, diabetes, and pancreatitis. We review the current roles of imaging modalities focusing on early detection of pancreatic cancer. Additionally, we propose the use of advanced imaging modalities to identify early, potentially curable pancreatic cancer in high-risk cohorts. We discuss innovative imaging techniques for early detection of pancreatic cancer, but its widespread application requires further investigation and potentially a combination with other non-invasive biomarkers.
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Affiliation(s)
- Katherina P. Farr
- School of Clinical Medicine, Faculty of Medicine & Health, UNSW, Sydney, NSW 2052, Australia; (K.S.H.); (B.H.C.)
- Correspondence:
| | - Daniel Moses
- Graduate School of Biomedical Engineering, UNSW, Sydney, NSW 2052, Australia;
| | - Koroush S. Haghighi
- School of Clinical Medicine, Faculty of Medicine & Health, UNSW, Sydney, NSW 2052, Australia; (K.S.H.); (B.H.C.)
- Department of General Surgery, Prince of Wales Hospital, Sydney, NSW 2052, Australia
| | - Phoebe A. Phillips
- Pancreatic Cancer Translational Research Group, School of Clinical Medicine, Lowy Cancer Research Centre, UNSW, Sydney, NSW 2052, Australia;
| | - Claudia M. Hillenbrand
- Research Imaging NSW, Division of Research & Enterprise, UNSW, Sydney, NSW 2052, Australia;
| | - Boon H. Chua
- School of Clinical Medicine, Faculty of Medicine & Health, UNSW, Sydney, NSW 2052, Australia; (K.S.H.); (B.H.C.)
- Nelune Comprehensive Cancer Centre, Prince of Wales Hospital, Sydney, NSW 2052, Australia
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15
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Kaandorp MPT, Barbieri S, Klaassen R, van Laarhoven HWM, Crezee H, While PT, Nederveen AJ, Gurney‐Champion OJ. Improved unsupervised physics-informed deep learning for intravoxel incoherent motion modeling and evaluation in pancreatic cancer patients. Magn Reson Med 2021; 86:2250-2265. [PMID: 34105184 PMCID: PMC8362093 DOI: 10.1002/mrm.28852] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE Earlier work showed that IVIM-NETorig , an unsupervised physics-informed deep neural network, was faster and more accurate than other state-of-the-art intravoxel-incoherent motion (IVIM) fitting approaches to diffusion-weighted imaging (DWI). This study presents a substantially improved version, IVIM-NEToptim , and characterizes its superior performance in pancreatic cancer patients. METHOD In simulations (signal-to-noise ratio [SNR] = 20), the accuracy, independence, and consistency of IVIM-NET were evaluated for combinations of hyperparameters (fit S0, constraints, network architecture, number of hidden layers, dropout, batch normalization, learning rate), by calculating the normalized root-mean-square error (NRMSE), Spearman's ρ, and the coefficient of variation (CVNET ), respectively. The best performing network, IVIM-NEToptim was compared to least squares (LS) and a Bayesian approach at different SNRs. IVIM-NEToptim 's performance was evaluated in an independent dataset of 23 patients with pancreatic ductal adenocarcinoma. Fourteen of the patients received no treatment between two repeated scan sessions and nine received chemoradiotherapy between the repeated sessions. Intersession within-subject standard deviations (wSD) and treatment-induced changes were assessed. RESULTS In simulations (SNR = 20), IVIM-NEToptim outperformed IVIM-NETorig in accuracy (NRMSE(D) = 0.177 vs 0.196; NMRSE(f) = 0.220 vs 0.267; NMRSE(D*) = 0.386 vs 0.393), independence (ρ(D*, f) = 0.22 vs 0.74), and consistency (CVNET (D) = 0.013 vs 0.104; CVNET (f) = 0.020 vs 0.054; CVNET (D*) = 0.036 vs 0.110). IVIM-NEToptim showed superior performance to the LS and Bayesian approaches at SNRs < 50. In vivo, IVIM-NEToptim showed significantly less noisy parameter maps with lower wSD for D and f than the alternatives. In the treated cohort, IVIM-NEToptim detected the most individual patients with significant parameter changes compared to day-to-day variations. CONCLUSION IVIM-NEToptim is recommended for accurate, informative, and consistent IVIM fitting to DWI data.
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Affiliation(s)
- Misha P. T. Kaandorp
- Department of Radiology and Nuclear MedicineCancer Center Amsterdam, Amsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
- Department of Radiology and Nuclear MedicineSt. Olav’s University HospitalTrondheimNorway
- Department of Circulation and Medical ImagingNTNU – Norwegian University of Science and TechnologyTrondheimNorway
| | | | - Remy Klaassen
- Department of Medical OncologyCancer Center Amsterdam, Amsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
| | - Hanneke W. M. van Laarhoven
- Department of Medical OncologyCancer Center Amsterdam, Amsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
| | - Hans Crezee
- Department of Radiology and Nuclear MedicineCancer Center Amsterdam, Amsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
| | - Peter T. While
- Department of Radiology and Nuclear MedicineSt. Olav’s University HospitalTrondheimNorway
- Department of Circulation and Medical ImagingNTNU – Norwegian University of Science and TechnologyTrondheimNorway
| | - Aart J. Nederveen
- Department of Radiology and Nuclear MedicineCancer Center Amsterdam, Amsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
| | - Oliver J. Gurney‐Champion
- Department of Radiology and Nuclear MedicineCancer Center Amsterdam, Amsterdam UMC, University of AmsterdamAmsterdamthe Netherlands
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16
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Kurita A, Mori Y, Someya Y, Kubo S, Azuma S, Iwano K, Ikeda S, Okumura R, Yazumi S. High signal intensity on diffusion-weighted magnetic resonance images is a useful finding for detecting early-stage pancreatic cancer. Abdom Radiol (NY) 2021; 46:4817-4827. [PMID: 34223962 PMCID: PMC8435518 DOI: 10.1007/s00261-021-03199-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 02/06/2023]
Abstract
Purpose Early detection of pancreatic ductal adenocarcinoma (PDAC) may improve the prognosis. We evaluated novel imaging findings that may contribute to early detection. Methods This single-center, retrospective study enrolled 37 patients with a localized main pancreatic duct (MPD) stricture and no obvious pancreatic mass. All patients underwent endoscopic retrograde cholangiopancreatography and brush sampling with cytology and serial pancreatic juice aspiration cytologic examination via endoscopic naso-pancreatic drainage. Patients with cytology-confirmed malignancy underwent surgical resection. The remaining patients were followed by contrast-enhanced computed tomography (CECT), magnetic resonance imaging (MRI), and endoscopic retrograde cholangiopancreatography. Results Twenty patients had confirmed malignancy (cancer group) and 17 did not (non-cancer group). Age, MPD stricture location, and PDAC risk factors were similar, but the sex predominance and symptom rate differed between the two groups. In the cancer group, 17 patients were diagnosed by cytology and three by clinical symptoms. CECT, MRI, and endoscopic ultrasonography (EUS) revealed no solid tumors in either group. CECT revealed no significant differences between groups. Diffusion-weighted MRI revealed significant differences in the signal intensity between groups. EUS detected indistinct and small hypoechoic areas in 70% and 41.2% of patients in the cancer and non-cancer groups, respectively. In the cancer group, 11 were diagnosed with cancer at the first indication, and nine were diagnosed at follow-up; the prognosis did not differ between these two subgroups.ss Conclusions High signal intensity in diffusion-weighted MRI may be useful for detecting early-stage PDAC and may be an indication for surgical resection even without pathologic confirmation. Clinical trial registration The study was a registered at the University Hospital Medical Information Network (UMIN000039623). Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s00261-021-03199-1.
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Kinh Do R, Reyngold M, Paudyal R, Oh JH, Konar AS, LoCastro E, Goodman KA, Shukla-Dave A. Diffusion-Weighted and Dynamic Contrast-Enhanced MRI Derived Imaging Metrics for Stereotactic Body Radiotherapy of Pancreatic Ductal Adenocarcinoma: Preliminary Findings. ACTA ACUST UNITED AC 2021; 6:261-271. [PMID: 32548304 PMCID: PMC7289241 DOI: 10.18383/j.tom.2020.00015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We aimed to assess longitudinal changes in quantitative imaging metric values obtained from diffusion-weighted (DW-) and dynamic contrast-enhanced magnetic resonance imaging (DCE)-MRI at pre-treatment (TX[0]), immediately after the first fraction of stereotactic body radiotherapy (D1-TX[1]), and 6 weeks post-TX (Post-TX[2]) in patients with pancreatic ductal adenocarcinoma. Ten enrolled patients (n = 10) underwent DW- and DCE-MRI examinations on a 3.0 T scanner. The apparent diffusion coefficient, ADC (mm2/s), was derived from DW imaging data using a monoexponential model. The tissue relaxation rate, R 1t, time-course data were fitted with a shutter-speed model, which provides estimates of the volume transfer constant, K trans (min-1), extravascular extracellular volume fraction, ve , and mean lifetime of intracellular water protons, τ i (seconds). Wilcoxon rank-sum test compared the mean values, standard deviation, skewness, kurtosis, and relative percentage (r, %) changes (Δ) in ADC, K trans, ve , and τ i values between the magnetic resonance examinations. rADCΔ2-0 values were significantly greater than rADCΔ1-0 values (P = .009). rK trans Δ2-0 values were significantly lower than rK trans Δ1-0 values (P = .048). rve Δ2-1 and rveΔ2-0 values were significantly different (P = .016). rτ i Δ2-1 values were significantly lower than rτ i Δ2-0 values (P = .008). For group comparison, the pre-TX mean and kurtosis of ADC (P = .18 and P = .14), skewness and kurtosis of K trans values (P = .14 for both) showed a leaning toward significant difference between patients who experienced local control (n = 2) and failed early (n = 4). DW- and DCE-MRI-derived quantitative metrics could be useful biomarkers to evaluate longitudinal changes to stereotactic body radiotherapy in patients with pancreatic ductal adenocarcinoma.
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Affiliation(s)
| | | | - Ramesh Paudyal
- Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY; and
| | - Jung Hun Oh
- Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY; and
| | | | - Eve LoCastro
- Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY; and
| | - Karyn A Goodman
- Tisch Cancer Institute at Mount Sinai Hospital, New York, NY
| | - Amita Shukla-Dave
- Departments of Radiology.,Medical Physics, Memorial Sloan Kettering Cancer Center, New York, NY; and
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Accuracy of quantitative diffusion-weighted imaging for differentiating benign and malignant pancreatic lesions: a systematic review and meta-analysis. Eur Radiol 2021; 31:7746-7759. [PMID: 33847811 DOI: 10.1007/s00330-021-07880-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/19/2021] [Accepted: 03/12/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND A variety of imaging techniques can be used to evaluate diffusion characteristics to differentiate malignant and benign pancreatic lesions. The diagnostic performance of diffusion parameters has not been systematic assessed. PURPOSE We aimed to investigate the diagnostic efficacy of quantitative diffusion-weighted imaging (DWI) for pancreatic lesions. METHODS A literature search was conducted using the PubMed, Embase, and Cochrane Library databases for studies from inception to March 30, 2020, which involves the quantitative diagnostic performance of diffusion-weighted imaging (DWI) and intravoxel incoherent motion (IVIM) in the pancreas. Studies were reviewed according to inclusion and exclusion criteria. The quality of articles was evaluated by the Quality Assessment of Diagnostic Accuracy Studies-2 (QUATAS-2). A bivariate random-effects model was used to evaluate pooled sensitivities and specificities. Univariable meta-regression analysis was used to test the effects of factors that contributed to the heterogeneity. RESULTS A total of 31 studies involving 1558 patients were ultimately eligible for data extraction. The lowest heterogeneity was found in specificity of perfusion fraction (f) with the I2 value was 17.97% and Cochran p value was 0.28. However, high heterogeneities were found for the other parameters (all I2 > 50%). There was no publication bias found in funnel plot (p = 0.30) for the apparent diffusion coefficient (ADC) parameter. The pooled sensitivities for ADC, f, pure diffusion coefficient (D), and pseudo diffusivity coefficient (D*) were 83%, 81%, 76%, and 84%, respectively. The pooled specificities for ADC, f, D, and D* were 87%, 83%, 69%, and 81% respectively. The areas under the curves for ADC, f, D, and D* were 0.92, 0.87, 0.79, and 0.87 respectively. CONCLUSION Quantitative DWI and IVIM have a good diagnostic performance for differentiating malignant and benign pancreatic lesions. KEY POINTS • IVIM has high sensitivity and specificity (84% and 83%, respectively) for differential diagnosis of pancreatic lesions, which is comparable to that of the ADC (83% and 87%, respectively). • The ADC has an excellent diagnostic performance for differentiating malignant from benign IPMNs (sensitivity, 0.83; specificity, 0.92); the f has the best diagnostic performance for differentiating pancreatic carcinoma from PNET (sensitivity, 0.85; specificity, 0.85). • For the ADC, using a maximal b value < 800 s/mm2 has a higher diagnostic accuracy than ≥ 800 s/mm2; performing in a high field strength (3.0 T) system has a higher diagnostic accuracy than a low field strength (1.5 T) for pancreatic lesions.
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Physiological Imaging Methods for Evaluating Response to Immunotherapies in Glioblastomas. Int J Mol Sci 2021; 22:ijms22083867. [PMID: 33918043 PMCID: PMC8069140 DOI: 10.3390/ijms22083867] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/05/2021] [Accepted: 04/05/2021] [Indexed: 12/19/2022] Open
Abstract
Glioblastoma (GBM) is the most malignant brain tumor in adults, with a dismal prognosis despite aggressive multi-modal therapy. Immunotherapy is currently being evaluated as an alternate treatment modality for recurrent GBMs in clinical trials. These immunotherapeutic approaches harness the patient's immune response to fight and eliminate tumor cells. Standard MR imaging is not adequate for response assessment to immunotherapy in GBM patients even after using refined response assessment criteria secondary to amplified immune response. Thus, there is an urgent need for the development of effective and alternative neuroimaging techniques for accurate response assessment. To this end, some groups have reported the potential of diffusion and perfusion MR imaging and amino acid-based positron emission tomography techniques in evaluating treatment response to different immunotherapeutic regimens in GBMs. The main goal of these techniques is to provide definitive metrics of treatment response at earlier time points for making informed decisions on future therapeutic interventions. This review provides an overview of available immunotherapeutic approaches used to treat GBMs. It discusses the limitations of conventional imaging and potential utilities of physiologic imaging techniques in the response assessment to immunotherapies. It also describes challenges associated with these imaging methods and potential solutions to avoid them.
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Moradi F, Brunsing RL, Sheth VR, Iagaru A. Positron Emission Tomography–Magnetic Resonance Imaging. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00003-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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21
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He M, Xu J, Sun Z, Wang X, Wang J, Feng F, Xue H, Jin Z. Prospective Comparison of Reduced Field-of-View (rFOV) and Full FOV (fFOV) Diffusion-Weighted Imaging (DWI) in the Assessment of Insulinoma: Image Quality and Lesion Detection. Acad Radiol 2020; 27:1572-1579. [PMID: 31954606 DOI: 10.1016/j.acra.2019.11.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/27/2019] [Accepted: 11/27/2019] [Indexed: 02/07/2023]
Abstract
RATIONALE AND OBJECTIVES To prospectively compare the image quality (IQ) and lesion detection performance of reduced field-of-view (rFOV) and full FOV (fFOV) diffusion-weighted imaging (DWI) sequences in detecting insulinomas. MATERIALS AND METHODS From October 2017 to September 2018, 67 patients with suspected insulinomas were prospectively enrolled and underwent imaging with both types of DWI sequences. The slice thickness (4 mm) and slice gaps (1 mm) were the same for the two DWI sequences, and the TR/TE was 2235/56 ms for the rFOV sequence and 1892/63 ms for the fFOV sequence. Three radiologists independently assessed the imaging quality (IQ) subjectively with a 5-point scale and objectively with signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) measurements. The IQ scores, CNR, SNR, lesion detection rates, and ADC values were compared. Receiver operating characteristic curves were generated, and the area under the curve (AUC) was used to compare the diagnostic performance. RESULTS Fifty patients were tumor positive, with 65 tumors (size: 1.31 ± 0.77 cm, range: 0.6-5.8 cm). The IQ score, SNR, and CNR were significantly higher for rFOV DWI than for fFOV DWI (IQ: 3.64 ± 0.487 vs 3.310 ± 0.577, SNR: 22.520 ± 8.690 vs 10.284 ± 3.321, CNR: 3.454 ± 2.642 vs 1.327 ± 2.801, and all p < 0.05). For lesions less than 1.5 cm (n = 55), the lesion detection rates of the rFOV were statistically improved compared to those of the fFOV (90.7% vs. 75.9%, p = 0.039). The sensitivity of lesion detection was significantly improved with the rFOV-DWI sequences compared to that with the fFOV-DWI sequences (0.924 vs. 0.773, p = 0.013). The ADC values of the two DWI sequences were consistent for insulinomas and normal parenchyma. CONCLUSION Considering the improvements in overall IQ and lesion detection and the consistency of ADC measurements, we suggest that rFOV DWI is a reliable auxiliary alternative to fFOV DWI for clinical practice in the detection of pancreatic insulinomas.
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Affiliation(s)
- Ming He
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shuaifuyuan No.1. Dongcheng District, Beijing, China
| | - Jin Xu
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shuaifuyuan No.1. Dongcheng District, Beijing, China
| | - Zhaoyong Sun
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shuaifuyuan No.1. Dongcheng District, Beijing, China
| | | | | | - Feng Feng
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shuaifuyuan No.1. Dongcheng District, Beijing, China
| | - Huadan Xue
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shuaifuyuan No.1. Dongcheng District, Beijing, China.
| | - Zhengyu Jin
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shuaifuyuan No.1. Dongcheng District, Beijing, China
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22
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Dunet V, Halkic N, Sempoux C, Demartines N, Montemurro M, Prior JO, Schmidt S. Prediction of tumour grade and survival outcome using pre-treatment PET- and MRI-derived imaging features in patients with resectable pancreatic ductal adenocarcinoma. Eur Radiol 2020; 31:992-1001. [PMID: 32851447 PMCID: PMC7813698 DOI: 10.1007/s00330-020-07191-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/29/2020] [Accepted: 08/12/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To perform a correlation analysis between histopathology and imaging in patients with previously untreated pancreatic ductal adenocarcinoma (PDAC) and to determine the prognostic values of clinical, histological, and imaging parameters regarding overall survival (OS), disease-specific survival (DSS), and progression-free survival (PFS). METHODS This single-centre study prospectively included 61 patients (32 males; median age, 68.0 years [IQR, 63.0-75.0 years]) with histologically confirmed PDAC and following surgical resection who preoperatively underwent 18F-FDG PET/CT and DW-MRI. On whole lesions, we measured, using a 42% SUVmax threshold volume of interest (VOI), the following quantitative parameters: mean and maximum standardised uptake values (SUVmean and SUVmax), total lesion glycolysis (TLG), metabolic tumour volume (MTV), mean and minimum apparent diffusion coefficient (ADCmean and ADCmin), diffusion total volume (DTV), and MTV/ADCmin ratio. Spearman's correlation analysis was performed to assess relationships between these markers and histopathological findings from surgical specimens (stage; grade; resection quality; and vascular, perineural, and lymphatic invasion). Kaplan-Meier and Cox hazard ratio methods were used to evaluate the impacts of imaging parameters on OS (n = 41), DSS (n = 36), and PFS (n = 41). RESULTS Inverse correlations between ADCmin and SUVmax (rho = - 0.34; p = 0.0071), and between SUVmean and ADCmean (rho = - 0.29; p = 0.026) were identified. ADCmin was inversely correlated with tumour grade (rho = - 0.40; p = 0.0015). MTV was an independent predictive factor for OS and DSS, while DTV was an independent predictive factor for PFS. CONCLUSION In previously untreated PDAC, ADC and SUV values are correlated. Combining PET-MRI metrics may help predict PDAC grade and patients' survival. KEY POINTS • Minimum apparent diffusion coefficient derived from DW-MRI inversely correlates with tumour grade in pancreatic ductal adenocarcinoma. • In pancreatic ductal adenocarcinoma, metabolic tumour volume has been confirmed as a predictive factor for patients' overall survival and disease-specific survival. • Combining PET and MRI metrics may help predict grade and patients' survival in pancreatic ductal adenocarcinoma.
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Affiliation(s)
- Vincent Dunet
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Nermin Halkic
- Department of Visceral Surgery, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Christine Sempoux
- Institute of Pathology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Nicolas Demartines
- Department of Visceral Surgery, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Michael Montemurro
- Department of Oncology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - John O Prior
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, CH-1011, Lausanne, Switzerland.
| | - Sabine Schmidt
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Diffusion-Weighted Imaging in Oncology: An Update. Cancers (Basel) 2020; 12:cancers12061493. [PMID: 32521645 PMCID: PMC7352852 DOI: 10.3390/cancers12061493] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 02/06/2023] Open
Abstract
To date, diffusion weighted imaging (DWI) is included in routine magnetic resonance imaging (MRI) protocols for several cancers. The real additive role of DWI lies in the "functional" information obtained by probing the free diffusivity of water molecules into intra and inter-cellular spaces that in tumors mainly depend on cellularity. Although DWI has not gained much space in some oncologic scenarios, this non-invasive tool is routinely used in clinical practice and still remains a hot research topic: it has been tested in almost all cancers to differentiate malignant from benign lesions, to distinguish different malignant histotypes or tumor grades, to predict and/or assess treatment responses, and to identify residual or recurrent tumors in follow-up examinations. In this review, we provide an up-to-date overview on the application of DWI in oncology.
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24
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Frøkjær JB, Lisitskaya MV, Jørgensen AS, Østergaard LR, Hansen TM, Drewes AM, Olesen SS. Pancreatic magnetic resonance imaging texture analysis in chronic pancreatitis: a feasibility and validation study. Abdom Radiol (NY) 2020; 45:1497-1506. [PMID: 32266506 DOI: 10.1007/s00261-020-02512-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE This feasibility and validation study addresses the potential use of magnetic resonance imaging (MRI) texture analysis of the pancreas in patients with chronic pancreatitis (CP). METHODS Extraction of 851 MRI texture features from diffusion weighted imaging (DWI) of the pancreas was performed in 77 CP patients and 22 healthy controls. Features were reduced to classify patients into subgroups, and a Bayes classifier was trained using a tenfold cross-validation forward selection procedure. The classifier was optimized to obtain the best average m-fold accuracy, sensitivity, specificity, and positive predictive value. Classifiers were: presence of disease (CP vs. healthy controls), etiological risk factors (alcoholic vs. nonalcoholic etiology of CP and tobacco use vs. no tobacco use), and complications to CP (presumed pancreatogenic diabetes vs. no diabetes and pancreatic exocrine insufficiency vs. normal pancreatic function). RESULTS The best classification performance was obtained for the disease classifier selecting only five of the original features with 98% accuracy, 97% sensitivity, 100% specificity, and 100% positive predictive value. The risk factor classifiers obtained good performance using 9 (alcohol: 88% accuracy) and 10 features (tobacco: 86% accuracy). The two complication classifiers obtained similar accuracies with only 4 (diabetes: 83% accuracy) and 3 features (exocrine pancreatic function: 82% accuracy). CONCLUSION Pancreatic texture analysis demonstrated to be feasible in patients with CP and discriminate clinically relevant subgroups based on etiological risk factors and complications. In future studies, the method may provide useful information on disease progression (monitoring) and detection of biomarkers characterizing early-stage CP.
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Affiliation(s)
- Jens Brøndum Frøkjær
- Department of Radiology, Aalborg University Hospital, P.O. Box 365, 9100, Aalborg, Denmark.
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
| | - Maria Valeryevna Lisitskaya
- Department of Radiology, Aalborg University Hospital, P.O. Box 365, 9100, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | | | | | - Tine Maria Hansen
- Department of Radiology, Aalborg University Hospital, P.O. Box 365, 9100, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Asbjørn Mohr Drewes
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Mech-Sense, Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmark
- Centre for Pancreatic Diseases, Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Søren Schou Olesen
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Mech-Sense, Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmark
- Centre for Pancreatic Diseases, Department of Gastroenterology & Hepatology, Aalborg University Hospital, Aalborg, Denmark
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25
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Abstract
Multidetector computed tomography (MDCT) is a widely used cross-sectional imaging modality for initial evaluation of patients with suspected pancreatic ductal adenocarcinoma (PDAC). However, diagnosis of PDAC can be challenging due to numerous pitfalls associated with image acquisition and interpretation, including technical factors, imaging features, and cognitive errors. Accurate diagnosis requires familiarity with these pitfalls, as these can be minimized using systematic strategies. Suboptimal acquisition protocols and other technical errors such as motion artifacts and incomplete anatomical coverage increase the risk of misdiagnosis. Interpretation of images can be challenging due to intrinsic tumor features (including small and isoenhancing masses, exophytic masses, subtle pancreatic duct irregularities, and diffuse tumor infiltration), presence of coexisting pathology (including chronic pancreatitis and intraductal papillary mucinous neoplasm), mimickers of PDAC (including focal fatty infiltration and focal pancreatitis), distracting findings, and satisfaction of search. Awareness of pitfalls associated with the diagnosis of PDAC along with the strategies to avoid them will help radiologists to minimize technical and interpretation errors. Cognizance and mitigation of these errors can lead to earlier PDAC diagnosis and ultimately improve patient prognosis.
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26
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Abdel Kader M, Abass HR, Suliman MM. Apparent diffusion coefficient of pancreatic adenocarcinoma: is there any congruity with tumor resectability? THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2019. [DOI: 10.1186/s43055-019-0026-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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27
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Diagnostic strategy with a solid pancreatic mass. Presse Med 2019; 48:e125-e145. [DOI: 10.1016/j.lpm.2019.02.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 02/13/2019] [Indexed: 12/14/2022] Open
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28
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Pan L, Shang N, Shangguan J, Figini M, Xing W, Wang B, Sun C, Yang J, Zhang Y, Hu S, Ma Q, Wang J, Velichko Y, Yaghmai V, Benson AB, Zhang Z. Magnetic resonance imaging monitoring therapeutic response to dendritic cell vaccine in murine orthotopic pancreatic cancer models. Am J Cancer Res 2019; 9:562-573. [PMID: 30949410 PMCID: PMC6448058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 02/18/2019] [Indexed: 06/09/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) carries the worst prognosis and caused one of the highest cancer-related mortalities. Dendritic cell (DC) vaccination is a promising cancer immunotherapy; however, the clinical outcomes are often poor. The administration route of DC vaccine can significantly alter the anti-tumor immune response. Here we report on the cytotoxic T lymphocyte (CTL) responses induced by DC vaccination administered via intraperitoneal (IP) for murine PDAC, and the longitudinal assessment of tumor growth and therapeutic responses using magnetic resonance imaging (MRI). In this study, we established murine orthotopic Panc02 models of PDAC and delivered apoptotic Panc02 cell-pulsed DCs via IP injection. The migration of Panc02-pulsed DCs into spleens significantly increased from 6 h to 12 h after initiation of treatment (P = 0.002), and Panc02-pulsed DCs injected via IP induced a significantly higher level of CTL responses against Panc02 cells compared to unpulsed DCs. Tumor size and tumor apparent diffusion coefficient (ADC) were measured on MR images. Tumor sizes were significantly smaller in the treated mice than in the untreated mice (P < 0.05). The reduction of tumor ADC was less in the treated mice than in the untreated mice (P < 0.05), and the changes in tumor ADC showed significant negative correlation with the changes in tumor volume (r = -0.882, 95% confidence interval, -0.967 to -0.701, P < 0.0001). These results demonstrated the efficacy of DC vaccination administered via IP injection in murine PDAC, and the feasibility of ADC measurement as an imaging biomarker for assessment of therapeutic responses in immunotherapy.
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Affiliation(s)
- Liang Pan
- Department of Radiology, Third Affiliated Hospital of Soochow UniversityChangzhou 213003, Jiangsu, China
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Na Shang
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Junjie Shangguan
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Matteo Figini
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Wei Xing
- Department of Radiology, Third Affiliated Hospital of Soochow UniversityChangzhou 213003, Jiangsu, China
| | - Bin Wang
- Department of Surgery, Second Affiliated Hospital, Zhejiang University School of MedicineHangzhou 310009, Zhejiang, China
| | - Chong Sun
- Department of Orthopedics, Affiliated Hospital of Qingdao UniversityQingdao 266005, Shandong, China
| | - Jia Yang
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Yaqi Zhang
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Su Hu
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Quanhong Ma
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Jian Wang
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
- Department of Radiology, Southwest Hospital, Third Military Medical UniversityChongqing 400038, China
| | - Yury Velichko
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
- Robert H. Lurie Comprehensive Cancer CenterChicago 60611, IL, USA
| | - Vahid Yaghmai
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
- Robert H. Lurie Comprehensive Cancer CenterChicago 60611, IL, USA
| | - Al B Benson
- Robert H. Lurie Comprehensive Cancer CenterChicago 60611, IL, USA
- Department of Hematology and Oncology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
| | - Zhuoli Zhang
- Department of Radiology, Feinberg School of Medicine, Northwestern UniversityChicago 60611, IL, USA
- Robert H. Lurie Comprehensive Cancer CenterChicago 60611, IL, USA
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Siddiqui N, Vendrami CL, Chatterjee A, Miller FH. Advanced MR Imaging Techniques for Pancreas Imaging. Magn Reson Imaging Clin N Am 2019; 26:323-344. [PMID: 30376973 DOI: 10.1016/j.mric.2018.03.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Advances in MR imaging with optimization of hardware, software, and techniques have allowed for an increased role of MR in the identification and characterization of pancreatic disorders. Diffusion-weighted imaging improves the detection and staging of pancreatic neoplasms and aides in the evaluation of acute, chronic and autoimmune pancreatitis. The use of secretin-enhanced MR cholangiography improves the detection of morphologic ductal anomalies, and assists in the characterization of pancreatic cystic lesions and evaluation of acute and chronic pancreatitis. Emerging MR techniques such as MR perfusion, T1 mapping/relaxometry, and MR elastography show promise in further evaluating pancreatic diseases.
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Affiliation(s)
- Nasir Siddiqui
- Department of Radiology, DuPage Medical Group, 430 Warrenville Road, Lisle, IL 60532, USA
| | - Camila Lopes Vendrami
- Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 North St. Clair Street Suite 800, Chicago, IL 60611, USA
| | - Argha Chatterjee
- Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 North St. Clair Street Suite 800, Chicago, IL 60611, USA
| | - Frank H Miller
- Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 North St. Clair Street Suite 800, Chicago, IL 60611, USA.
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Chhoda A, Lu L, Clerkin BM, Risch H, Farrell JJ. Current Approaches to Pancreatic Cancer Screening. THE AMERICAN JOURNAL OF PATHOLOGY 2019; 189:22-35. [PMID: 30558719 DOI: 10.1016/j.ajpath.2018.09.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 08/29/2018] [Accepted: 09/26/2018] [Indexed: 12/19/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) has a 5-year survival rate of only 8% and is estimated to be the second leading cause of cancer-related deaths by 2021. Prior convention held that screening for PDAC would not be beneficial; however, a deeper understanding of the carcinogenesis pathway supports a potential window of opportunity among the target population. Screening for PDAC is not a standard practice among the general population because of its low incidence. However, screening may be beneficial for individuals with familial history, chronic diseases with genetic predispositions, or inherited cancer syndromes, such as hereditary breast ovarian cancer syndrome, hereditary pancreatitis, Peutz-Jeghers syndrome, familial atypical multiple mole melanoma, Lynch syndrome (hereditary nonpolyposis colorectal cancer), ataxia telangiectasia, and Li-Fraumeni syndrome, all of which have been associated with an increased risk of developing PDAC. The screening strategies among these high-risk individuals are targeted to identify precursor lesions and PDAC at an early resectable stage. This review describes the risk factors for pancreatic cancer, especially the genetic risk factors in high-risk individuals and current screening strategies available for PDAC.
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Affiliation(s)
- Ankit Chhoda
- Yale Waterbury Internal Medicine Program, Yale School of Medicine, New Haven, Connecticut
| | - Lingeng Lu
- Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut
| | - Barbara M Clerkin
- Pancreatic Disease Program, Yale School of Medicine, New Haven, Connecticut
| | - Harvey Risch
- Chronic Disease Epidemiology, Yale School of Public Health, New Haven, Connecticut
| | - James J Farrell
- Yale Center for Pancreatic Diseases, Yale School of Medicine, New Haven, Connecticut; Yale Center for Pancreatic Diseases, Department of Digestive Diseases, Yale School of Public Health, New Haven, Connecticut.
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31
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Intravoxel incoherent motion diffusion-weighted MR imaging of solid pancreatic masses: reliability and usefulness for characterization. Abdom Radiol (NY) 2019; 44:131-139. [PMID: 29951899 DOI: 10.1007/s00261-018-1684-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE IVIM-DW imaging has shown potential usefulness in the study of pancreatic lesions. Controversial results are available regarding the reliability of the measurements of IVIM-derived parameters. The aim of this study was to evaluate the reliability and the diagnostic potential of IVIM-derived parameters in differentiation among focal solid pancreatic lesions and normal pancreas (NP). METHODS Fifty-seven patients (34 carcinomas-PDACs, 18 neuroendocrine neoplasms-panNENs, and 5 autoimmune pancreatitis-AIP) and 50 subjects with NP underwent 1.5-T MR imaging including IVIM-DWI. Images were analyzed by two independent readers. Apparent diffusion coefficient (ADC), slow component of diffusion (D), incoherent microcirculation (Dp), and perfusion fraction (f) were calculated. Interobserver reliability was assessed with intraclass correlation coefficient (ICC). A Kruskal-Wallis H test with Steel-Dwass post hoc test was used for comparison. The diagnostic performance of each parameter was evaluated through receiver operating characteristic (ROC) curve analysis. RESULTS Overall interobserver agreement was excellent (ICC = 0.860, 0.937, 0.968, and 0.983 for ADC, D, Dp, and f). D, Dp, and f significantly differed among PDACs and panNENs (p = 0.002, < 0.001, and < 0.001), albeit without significant difference at the pairwise comparison of ROC curves (p = 0.08-0.74). Perfusion fraction was higher in AIP compared with PDACs (p = 0.024; AUC = 0.735). Dp and f were higher in panNENs compared with AIP (p = 0.029 and 0.023), without differences at ROC analysis (p = 0.07). CONCLUSIONS IVIM-derived parameters have excellent reliability and could help in differentiation among solid pancreatic lesions and NP.
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32
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Is magnetic resonance diffusion-weighted imaging superior in the diagnosis of pancreatic adenocarcinoma and does it have a prognostic value? THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2018. [DOI: 10.1016/j.ejrnm.2018.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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33
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Vohra R, Park J, Wang YN, Gravelle K, Whang S, Hwang JH, Lee D. Evaluation of pancreatic tumor development in KPC mice using multi-parametric MRI. Cancer Imaging 2018; 18:41. [PMID: 30409175 PMCID: PMC6225661 DOI: 10.1186/s40644-018-0172-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 10/16/2018] [Indexed: 12/18/2022] Open
Abstract
Background Pancreatic ductal adenocarcinoma (PDA) is a fatal disease with very poor prognosis. Development of sensitive and noninvasive methods to monitor tumor progression in PDA is a critical and unmet need. Magnetic resonance imaging (MRI) can noninvasively provide information regarding underlying pathophysiological processes such as necrosis, inflammatory changes and fibrotic tissue deposition. Methods A genetically engineered KPC mouse model that recapitulates human PDA was used to characterize disease progression. MR measures of T1 and T2 relaxation times, magnetization transfer ratio (MTR), diffusion and chemical exchange saturation transfer were compared in two separate phases i.e. slow and rapid growth phase of tumor. Fibrotic tissue accumulation was assessed histologically using Masson’s trichrome staining. Pearson correlation coefficient (r) was computed to assess the relationship between the fibrotic tissue accumulation and different MR parameters. Results There was a negative correlation between amide proton transfer signal intensity and tumor volume (r = − 0.63, p = 0.003) in the slow growth phase of the tumor development. In the terminal stage of rapid growth phase of the tumor development MTR was strongly correlated with tumor volume (r = 0.62, p = 0.008). Finally, MTR was significantly correlated with % fibrosis (r = 0.87; p < 0.01), followed by moderate correlation between tumor volume (r = 0.42); T1 (r = − 0.61), T2 (r = − 0.61) and accumulation of fibrotic tissue. Conclusions Here we demonstrated, using multi-parametric MRI (mp-MRI), that MRI parameters changed with tumor progression in a mouse model of PDA. Use of mp-MRI may have the potential to monitor the dynamic changes of tumor microenvironment with increase in tumor size in the transgenic KPC mouse model of pancreatic tumor. Electronic supplementary material The online version of this article (10.1186/s40644-018-0172-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ravneet Vohra
- Department of Radiology, University of Washington, Seattle, USA
| | - Joshua Park
- Department of Radiology, University of Washington, Seattle, USA
| | - Yak-Nam Wang
- Applied Physics Laboratory, University of Washington, Seattle, USA
| | - Kayla Gravelle
- Applied Physics Laboratory, University of Washington, Seattle, USA
| | - Stella Whang
- Applied Physics Laboratory, University of Washington, Seattle, USA
| | - Joo-Ha Hwang
- Department of Medicine, University of Washington, Seattle, USA
| | - Donghoon Lee
- Department of Radiology, University of Washington, Seattle, USA.
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34
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Baleato-González S, García-Figueiras R, Luna A, Domínguez-Robla M, Vilanova J. Functional imaging in pancreatic disease. RADIOLOGIA 2018. [DOI: 10.1016/j.rxeng.2018.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Liu Y, Wang M, Ji R, Cang L, Gao F, Shi Y. Differentiation of pancreatic ductal adenocarcinoma from inflammatory mass: added value of magnetic resonance elastography. Clin Radiol 2018; 73:865-872. [DOI: 10.1016/j.crad.2018.05.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 05/10/2018] [Indexed: 02/06/2023]
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36
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Baleato-González S, García-Figueiras R, Luna A, Domínguez-Robla M, Vilanova JC. Functional imaging in pancreatic disease. RADIOLOGIA 2018; 60:451-464. [PMID: 30236460 DOI: 10.1016/j.rx.2018.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 07/19/2018] [Accepted: 07/23/2018] [Indexed: 12/12/2022]
Abstract
In addition to the classical morphological evaluation of pancreatic disease, the constant technological advances in imaging techniques based fundamentally on computed tomography and magnetic resonance imaging have enabled the quantitative functional and molecular evaluation of this organ. In many cases, this imaging-based information results in substantial changes to patient management and can be a fundamental tool for the development of biomarkers. The aim of this article is to review the role of emerging functional and molecular techniques based on computed tomography and magnetic resonance imaging in the evaluation of pancreatic disease.
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Affiliation(s)
- S Baleato-González
- Departamento de Radiología, Complexo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, A Coruña, España.
| | - R García-Figueiras
- Departamento de Radiología, Complexo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, A Coruña, España
| | - A Luna
- Grupo Health Time. Director - Advanced Medical Imaging, Sercosa (Servicio de Radiología Computerizada), Clínica Las Nieves, Jaén, España
| | - M Domínguez-Robla
- Departamento de Radiología, Complexo Hospitalario Universitario de Santiago de Compostela, Santiago de Compostela, A Coruña, España
| | - J C Vilanova
- Departamento de Radiología, Clínica Girona-Hospital Santa Caterina, Girona, España
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37
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Diffusion-weighted imaging in hemorrhagic abdominal and pelvic lesions: restricted diffusion can mimic malignancy. Abdom Radiol (NY) 2018; 43:1772-1784. [PMID: 29110051 DOI: 10.1007/s00261-017-1366-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Diffusion-weighted imaging (DWI) is an increasingly utilized sequence in the assessment of abdominal and pelvic lesions. Benign lesions containing hemorrhagic products, with conglomerates of tightly packed blood cells or fibers, can have restricted water diffusion on DWI and apparent diffusion coefficient maps. Such lesions can have restricted diffusion erroneously attributed to malignancy. This review illustrates benign hemorrhagic lesions displaying restricted diffusion, with histopathologic correlation in relevant cases.
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38
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Llop E, Guerrero PE, Duran A, Barrabés S, Massaguer A, Ferri MJ, Albiol-Quer M, de Llorens R, Peracaula R. Glycoprotein biomarkers for the detection of pancreatic ductal adenocarcinoma. World J Gastroenterol 2018; 24:2537-2554. [PMID: 29962812 PMCID: PMC6021768 DOI: 10.3748/wjg.v24.i24.2537] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/04/2018] [Accepted: 06/09/2018] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer (PaC) shows a clear tendency to increase in the next years and therefore represents an important health and social challenge. Currently, there is an important need to find biomarkers for PaC early detection because the existing ones are not useful for that purpose. Recent studies have indicated that there is a large window of time for PaC early detection, which opens the possibility to find early biomarkers that could greatly improve the dismal prognosis of this tumor. The present manuscript reviews the state of the art of the existing PaC biomarkers. It focuses on the anomalous glycosylation process and its role in PaC. Glycan structures of glycoconjugates such as glycoproteins are modified in tumors and these modifications can be detected in biological fluids of the cancer patients. Several studies have found serum glycoproteins with altered glycan chains in PaC patients, but they have not shown enough specificity for PaC. To find more specific cancer glycoproteins we propose to analyze the glycan moieties of a battery of glycoproteins that have been reported to increase in PaC tissues and that can also be found in serum. The combination of these new candidate glycoproteins with their aberrant glycosylation together with the existing biomarkers could result in a panel, which would expect to give better results as a new tool for early diagnosis of PaC and to monitor the disease.
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Affiliation(s)
- Esther Llop
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
| | - Pedro E Guerrero
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
| | - Adrià Duran
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
| | - Sílvia Barrabés
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
| | - Anna Massaguer
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
| | - María José Ferri
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
- Clinic Laboratory, University Hospital Dr Josep Trueta, Girona 17007, Spain
| | - Maite Albiol-Quer
- Department of Surgery, Hepato-biliary and Pancreatic Surgery Unit, University Hospital Dr Josep Trueta, Girona 17007, Spain
| | - Rafael de Llorens
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
| | - Rosa Peracaula
- Department of Biology, Biochemistry and Molecular Biology Unit, University of Girona, Girona 17003, Spain
- Biomedical Research Institute of Girona (IdIBGi). Parc Hospitalari Martí i Julià-Edifici M2, Salt 17190, Spain
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Ma W, Zhang G, Ren J, Pan Q, Wen D, Zhong J, Zhang Z, Huan Y. Quantitative parameters of intravoxel incoherent motion diffusion weighted imaging (IVIM-DWI): potential application in predicting pathological grades of pancreatic ductal adenocarcinoma. Quant Imaging Med Surg 2018; 8:301-310. [PMID: 29774183 DOI: 10.21037/qims.2018.04.08] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background The aim of this study was to compare intravoxel incoherent motion diffusion weighted imaging (IVIM-DWI) parameters such as standard apparent diffusion coefficient (ADCstandard), pure diffusion coefficient (Dslow), pseudodiffusion coefficient (Dfast) and perfusion fraction (ƒ) for differentiating pancreatic ductal adenocarcinoma (PDAC) with different pathological grades. Methods Institutional Review Board of our hospital approved this study protocol. Subjects comprised 38 PDACs confirmed by pathology. Pancreatic multiple b values DWI with 15 b values of 0, 10, 20, 40, 60, 80, 100, 150, 200, 400, 800, 1,000, 1200, 1,500, and 2,000 s/mm2 was performed using GE Discovery MR750 3.0T scanner. ADCstandard, Dslow, Dfast and ƒ values of all PDACs were calculated using mono- and bi-exponential models. Parameters of well/moderately differentiated and poorly differentiated PDAC were compared using Independent Sample t-test. P values <0.05 were considered significant. Results Mean Dslow value of well/moderately differentiated PDAC was significantly lower than that of poorly differentiated PDAC (0.540×10-3vs. 0.676×10-3 mm2/s, P<0.001). Mean ƒ value of well/moderately differentiated PDAC was significantly higher than that of poorly differentiated PDAC (60.3% vs. 38.4%, P<0.001). The area under curve value of ƒ in differentiating well/moderately differentiated PDAC from poorly differentiated PDAC was slightly higher than that of Dslow (0.894>0.865). When the Dslow value was less than or equal to 0.599×10-3 mm2/s, the sensitivity and specificity were 100% and 84.6% respectively. When ƒ value was greater than 49.6%, the sensitivity and specificity were 92.0% and 84.6% respectively. Conclusions Dslow and ƒ derived from IVIM-DWI model can be used to distinguish well/moderately differentiated PDAC from poorly differentiated PDAC. And to serve this purpose, Dslow and ƒ have high diagnostic performance. IVIM-DWI is a promising and non-invasive tool for predicting pathological grade of PDAC.
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Affiliation(s)
- Wanling Ma
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Guangwen Zhang
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jing Ren
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Qi Pan
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Didi Wen
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Jinman Zhong
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Zhuoli Zhang
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Yi Huan
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
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Chen BB, Tien YW, Chang MC, Cheng MF, Chang YT, Yang SH, Wu CH, Kuo TC, Shih IL, Yen RF, Shih TTF. Multiparametric PET/MR imaging biomarkers are associated with overall survival in patients with pancreatic cancer. Eur J Nucl Med Mol Imaging 2018; 45:1205-1217. [PMID: 29476229 DOI: 10.1007/s00259-018-3960-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 01/22/2018] [Indexed: 12/11/2022]
Abstract
PURPOSE To correlate the overall survival (OS) with the imaging biomarkers of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), diffusion-weighted imaging (DWI), magnetic resonance spectroscopy, and glucose metabolic activity derived from integrated fluorine 18 fluorodeoxyglucose positron emission tomography (18F-FDG PET)/MRI in patients with pancreatic cancer. METHODS This prospective study was approved by the institutional review board and informed consent was obtained from all participants. Sixty-three consecutive patients (mean age, 62.7 ± 12 y; men/women, 40/23) with pancreatic cancer underwent PET/MRI before treatment. The imaging biomarkers were comprised of DCE-MRI parameters (peak, IAUC 60 , K trans , k ep , v e ), the minimum apparent diffusion coefficient (ADCmin), choline level, standardized uptake values, metabolic tumor volume, and total lesion glycolysis (TLG) of the tumors. The relationships between these imaging biomarkers with OS were evaluated with the Kaplan-Meier and Cox proportional hazard models. RESULTS Seventeen (27%) patients received curative surgery, with the median follow-up duration being 638 days. Univariate analysis showed that patients at a low TNM stage (≦3, P = 0.041), high peak (P = 0.006), high ADCmin (P = 0.002) and low TLG (P = 0.01) had better OS. Moreover, high TLG/peak ratio was associated with poor OS (P = 0.016). Multivariate analysis indicated that ADCmin (P = 0.011) and TLG/peak ratio (P = 0.006) were independent predictors of OS after adjustment for age, gender, tumor size, and TNM stage. The TLG/peak ratio was an independent predictor of OS in a subgroup of patients who did not receive curative surgery (P = 0.013). CONCLUSION The flow-metabolism mismatch reflected by the TLG/peak ratio may better predict OS than other imaging biomarkers from PET/MRI in pancreatic cancer patients.
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Affiliation(s)
- Bang-Bin Chen
- Department of Medical Imaging and Radiology, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Yu-Wen Tien
- Department of Surgery, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Ming-Chu Chang
- Department of Internal Medicine, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Mei-Fang Cheng
- Department of Nuclear Medicine and Radiology, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Yu-Ting Chang
- Department of Internal Medicine, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Shih-Hung Yang
- Department of Oncology, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Chih-Horng Wu
- Department of Medical Imaging and Radiology, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Ting-Chun Kuo
- Department of Surgery, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - I-Lun Shih
- Department of Medical Imaging and Radiology, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Ruoh-Fang Yen
- Department of Nuclear Medicine and Radiology, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan
| | - Tiffany Ting-Fang Shih
- Department of Medical Imaging and Radiology, National Taiwan University College of Medicine and Hospital, No 7, Chung-Shan South Rd, Taipei, 10016, Taiwan.
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Kikuyama M, Kamisawa T, Kuruma S, Chiba K, Kawaguchi S, Terada S, Satoh T. Early Diagnosis to Improve the Poor Prognosis of Pancreatic Cancer. Cancers (Basel) 2018; 10:cancers10020048. [PMID: 29439461 PMCID: PMC5836080 DOI: 10.3390/cancers10020048] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 01/25/2018] [Accepted: 02/02/2018] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancer (PC) has a poor prognosis due to delayed diagnosis. Early diagnosis is the most important factor for improving prognosis. For early diagnosis of PC, patients with clinical manifestations suggestive of PC and high risk for developing PC need to be selected for examinations for PC. Signs suggestive of PC (e.g., symptoms, diabetes mellitus, acute pancreatitis, or abnormal results of blood examinations) should not be missed, and the details of risks for PC (e.g., familial history of PC, intraductal mucin producing neoplasm, chronic pancreatitis, hereditary pancreatitis, or life habit) should be understood. Multidetector computed tomography (MDCT) and magnetic resonance imaging (MRI) can be performed for diagnosing PC, but the diagnostic ability of these examinations for PC is limited. Endoscopic diagnostic procedures, such as endoscopic ultrasonography, including fine-needle aspiration, and endoscopic retrograde pancreatocholangiography, including Serial Pancreatic-juice Aspiration Cytologic Examination (SPACE), could be recommended for a detailed examination to diagnose pancreatic carcinoma earlier.
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Affiliation(s)
- Masataka Kikuyama
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Terumi Kamisawa
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Sawako Kuruma
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Kazuro Chiba
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Shinya Kawaguchi
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan.
| | - Shuzo Terada
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan.
| | - Tatsunori Satoh
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan.
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Trajkovic-Arsic M, Heid I, Steiger K, Gupta A, Fingerle A, Wörner C, Teichmann N, Sengkwawoh-Lueong S, Wenzel P, Beer AJ, Esposito I, Braren R, Siveke JT. Apparent Diffusion Coefficient (ADC) predicts therapy response in pancreatic ductal adenocarcinoma. Sci Rep 2017; 7:17038. [PMID: 29213099 PMCID: PMC5719052 DOI: 10.1038/s41598-017-16826-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/17/2017] [Indexed: 01/05/2023] Open
Abstract
Recent advances in molecular subtyping of Pancreatic Ductal Adenocarcinoma (PDAC) support individualization of therapeutic strategies in this most aggressive disease. With the emergence of various novel therapeutic strategies and neoadjuvant approaches in this quickly deteriorating disease, robust approaches for fast evaluation of therapy response are urgently needed. To this aim, we designed a preclinical imaging-guided therapy trial where genetically engineered mice harboring endogenous aggressive PDAC were treated with the MEK targeting drug refametinib, which induces rapid and profound tumor regression in this model system. Multi-parametric non-invasive imaging was used for therapy response monitoring. A significant increase in the Diffusion-Weighted Magnetic Resonance Imaging derived Apparent Diffusion Coefficient (ADC) was noted already 24 hours after treatment onset. Histopathological analyses showed increased apoptosis and matrix remodeling at this time point. Our findings suggest the ADC parameter as an early predictor of therapy response in PDAC.
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Affiliation(s)
- M Trajkovic-Arsic
- Division of Solid Tumor Translational Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK, partner site Essen) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - I Heid
- Institute of Radiology, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - K Steiger
- Institute of Pathology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - A Gupta
- 2. Medizinische Klinik, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - A Fingerle
- Institute of Radiology, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - C Wörner
- Institute of Radiology, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - N Teichmann
- 2. Medizinische Klinik, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - S Sengkwawoh-Lueong
- Division of Solid Tumor Translational Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany
- German Cancer Consortium (DKTK, partner site Essen) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - P Wenzel
- 2. Medizinische Klinik, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - A J Beer
- Department of Nuclear Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
- Department of Nuclear Medicine, University Hospital of Ulm, Ulm, Germany
| | - I Esposito
- Institute of Pathology, University Clinic Duesseldorf, Heinrich-Heine University, Duesseldorf, Germany
| | - R Braren
- Institute of Radiology, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.
| | - J T Siveke
- Division of Solid Tumor Translational Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany.
- German Cancer Consortium (DKTK, partner site Essen) and German Cancer Research Center (DKFZ), Heidelberg, Germany.
- 2. Medizinische Klinik, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.
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Shenoy-Bhangle A, Baliyan V, Kordbacheh H, Guimaraes AR, Kambadakone A. Diffusion weighted magnetic resonance imaging of liver: Principles, clinical applications and recent updates. World J Hepatol 2017; 9:1081-1091. [PMID: 28989564 PMCID: PMC5612839 DOI: 10.4254/wjh.v9.i26.1081] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/06/2017] [Accepted: 06/07/2017] [Indexed: 02/06/2023] Open
Abstract
Diffusion-weighted imaging (DWI), a functional imaging technique exploiting the Brownian motion of water molecules, is increasingly shown to have value in various oncological and non-oncological applications. Factors such as the ease of acquisition and ability to obtain functional information in the absence of intravenous contrast, especially in patients with abnormal renal function, have contributed to the growing interest in exploring clinical applications of DWI. In the liver, DWI demonstrates a gamut of clinical applications ranging from detecting focal liver lesions to monitoring response in patients undergoing serial follow-up after loco-regional and systemic therapies. DWI is also being applied in the evaluation of diffuse liver diseases such as non-alcoholic fatty liver disease, hepatic fibrosis and cirrhosis. In this review, we intend to review the basic principles, technique, current clinical applications and future trends of DW-MRI in the liver.
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Affiliation(s)
| | - Vinit Baliyan
- Harvard Medical School, Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital, Boston, MA 02114, United States
| | - Hamed Kordbacheh
- Harvard Medical School, Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital, Boston, MA 02114, United States
| | | | - Avinash Kambadakone
- Harvard Medical School, Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital, Boston, MA 02114, United States
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Nissan N. Modifications of pancreatic diffusion MRI by tissue characteristics: what are we weighting for? NMR IN BIOMEDICINE 2017; 30:e3728. [PMID: 28470823 DOI: 10.1002/nbm.3728] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/10/2017] [Accepted: 03/13/2017] [Indexed: 06/07/2023]
Abstract
Diffusion-weighted imaging holds the potential to improve the diagnosis and biological characterization of pancreatic disease, and in particular pancreatic cancer, which exhibits decreased values of the apparent diffusion coefficient (ADC). Yet, variable and overlapping ADC values have been reported for the healthy and the pathological pancreas, including for cancer and other benign conditions. This controversy reflects the complexity of probing the water-diffusion process in the pancreas, which is dependent upon multiple biological factors within this organ's unique physiological environment. In recent years, extensive studies have investigated the correlation between tissue properties including cellularity, vascularity, fibrosis, secretion and microstructure and pancreatic diffusivity. Understanding how the various physiological and pathological features and the underlying functional processes affect the diffusion measurement may serve to optimize the method for improved diagnostic gain. Therefore, the aim of the present review article is to elucidate the relationship between pancreatic tissue characteristics and diffusion MRI measurement.
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Affiliation(s)
- Noam Nissan
- Department of Diagnostic Imaging, Chaim Sheba Medical Center, Tel HaShomer 5265601, Israel
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45
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PET-MRI of the Pancreas and Kidneys. CURRENT RADIOLOGY REPORTS 2017. [DOI: 10.1007/s40134-017-0229-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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46
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Moutinho-Ribeiro P, Coelho R, Giovannini M, Macedo G. Pancreatic cancer screening: Still a delusion? Pancreatology 2017; 17:754-765. [PMID: 28739291 DOI: 10.1016/j.pan.2017.07.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 06/17/2017] [Accepted: 07/05/2017] [Indexed: 12/11/2022]
Abstract
Pancreatic adenocarcinoma represents the fourth most common cause of cancer mortality and death due to pancreatic cancer (PC) have increased since 2003. Its incidence has also raised about 30% in the past decade and it is expected to become the second cause of cancer mortality by 2020 in the USA. Most PC present with metastatic disease and improvements in treatment outcomes for this group have been disappointing. These observations support the idea that screening to identify patients at an earlier stage might be an important strategy in improving overall PC outcomes. Many protocols have been tested, nevertheless, by now there is no effective screening program. Given the overall low incidence of disease and the current lack of accurate, inexpensive and noninvasive screening tests, the consensus is that widespread population-based screening for PC in the general population or in patients with only one affected first-degree relative is neither practicable nor indicated in most countries. However, a different scenario is screening patients with higher risk for PC, most of them with hereditary conditions predisposing the development of this neoplasia. In fact, some guidelines are now available helping to select these individuals at risk and to screen them, in order to achieve early detection of PC.
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Affiliation(s)
- Pedro Moutinho-Ribeiro
- Department of Gastroenterology, Centro Hospitalar São João, Porto, Portugal; Faculty of Medicine, University of Porto, Portugal.
| | - Rosa Coelho
- Department of Gastroenterology, Centro Hospitalar São João, Porto, Portugal
| | - Marc Giovannini
- Endoscopic Unit, Paoli-Calmettes Institute, Marseilles, France
| | - Guilherme Macedo
- Department of Gastroenterology, Centro Hospitalar São João, Porto, Portugal; Faculty of Medicine, University of Porto, Portugal
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Mahajan A, Deshpande SS, Thakur MH. Diffusion magnetic resonance imaging: A molecular imaging tool caught between hope, hype and the real world of “personalized oncology”. World J Radiol 2017; 9:253-268. [PMID: 28717412 PMCID: PMC5491653 DOI: 10.4329/wjr.v9.i6.253] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 03/08/2017] [Accepted: 04/19/2017] [Indexed: 02/06/2023] Open
Abstract
“Personalized oncology” is a multi-disciplinary science, which requires inputs from various streams for optimal patient management. Humongous progress in the treatment modalities available and the increasing need to provide functional information in addition to the morphological data; has led to leaping progress in the field of imaging. Magnetic resonance imaging has undergone tremendous progress with various newer MR techniques providing vital functional information and is becoming the cornerstone of “radiomics/radiogenomics”. Diffusion-weighted imaging is one such technique which capitalizes on the tendency of water protons to diffuse randomly in a given system. This technique has revolutionized oncological imaging, by giving vital qualitative and quantitative information regarding tumor biology which helps in detection, characterization and post treatment surveillance of the lesions and challenging the notion that “one size fits all”. It has been applied at various sites with different clinical experience. We hereby present a brief review of this novel functional imaging tool, with its application in “personalized oncology”.
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Kamimura K, Nakajo M, Fukukura Y, Iwanaga T, Saito T, Sasaki M, Fujisaki T, Takemura A, Okuaki T, Yoshiura T. Intravoxel Incoherent Motion in Normal Pituitary Gland: Initial Study with Turbo Spin-Echo Diffusion-Weighted Imaging. AJNR Am J Neuroradiol 2016; 37:2328-2333. [PMID: 27516241 DOI: 10.3174/ajnr.a4930] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/16/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE DWI with conventional single-shot EPI of the pituitary gland is hampered by strong susceptibility artifacts. Our purpose was to evaluate the feasibility of intravoxel incoherent motion assessment by using DWI based on TSE of the normal anterior pituitary lobe. MATERIALS AND METHODS The intravoxel incoherent motion parameters, including the true diffusion coefficient (D), the perfusion fraction (f), and the pseudo-diffusion coefficient (D*), were obtained with TSE-DWI in 5 brain regions (the pons, the WM and GM of the vermis, and the genu and splenium of the corpus callosum) in 8 healthy volunteers, and their agreement with those obtained with EPI-DWI was evaluated by using the intraclass correlation coefficient. The 3 intravoxel incoherent motion parameters in the anterior pituitary lobe were compared with those in the brain regions by using the Dunnett test. RESULTS The agreement between TSE-DWI and EPI-DWI was moderate (intraclass correlation coefficient = 0.571) for D, substantial (0.699) for f', but fair (0.405) for D*. D in the anterior pituitary lobe was significantly higher than in the 5 brain regions (P < .001). The f in the anterior pituitary lobe was significantly higher than in the 5 brain regions (P < .001), except for the vermian GM. The pituitary D* was not significantly different from that in the 5 brain regions. CONCLUSIONS Our results demonstrated the feasibility of intravoxel incoherent motion assessment of the normal anterior pituitary lobe by using TSE-DWI. High D and f values in the anterior pituitary lobe were thought to reflect its microstructural and perfusion characteristics.
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Affiliation(s)
- K Kamimura
- From the Department of Radiology (K.K., M.N., Y.F., T.Y.), Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - M Nakajo
- From the Department of Radiology (K.K., M.N., Y.F., T.Y.), Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Y Fukukura
- From the Department of Radiology (K.K., M.N., Y.F., T.Y.), Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - T Iwanaga
- Department of Radiological Technology (T.I., T.S., M.S., T.F.), Kagoshima University Hospital, Kagoshima, Japan
| | - T Saito
- Department of Radiological Technology (T.I., T.S., M.S., T.F.), Kagoshima University Hospital, Kagoshima, Japan
| | - M Sasaki
- Department of Radiological Technology (T.I., T.S., M.S., T.F.), Kagoshima University Hospital, Kagoshima, Japan
| | - T Fujisaki
- Department of Radiological Technology (T.I., T.S., M.S., T.F.), Kagoshima University Hospital, Kagoshima, Japan
| | - A Takemura
- Philips Electronics Japan (A.T.), Tokyo, Japan
| | - T Okuaki
- Philips Healthcare (T.O.), Tokyo, Japan
| | - T Yoshiura
- From the Department of Radiology (K.K., M.N., Y.F., T.Y.), Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Overbeek KA, Cahen DL, Canto MI, Bruno MJ. Surveillance for neoplasia in the pancreas. Best Pract Res Clin Gastroenterol 2016; 30:971-986. [PMID: 27938791 PMCID: PMC5552042 DOI: 10.1016/j.bpg.2016.10.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 10/25/2016] [Accepted: 10/31/2016] [Indexed: 01/31/2023]
Abstract
Despite its low incidence in the general population, pancreatic cancer is one of the leading causes of cancer-related mortality. Survival greatly depends on operability, but most patients present with unresectable disease. Therefore, there is great interest in the early detection of pancreatic cancer and its precursor lesions by surveillance. Worldwide, several programs have been initiated for individuals at high risk for pancreatic cancer. Their first results suggest that surveillance in high-risk individuals is feasible, but their effectiveness in decreasing mortality remains to be proven. This review will discuss which individuals are eligible for surveillance, which lesions are aimed to be detected, and which surveillance modalities are being used in current clinical practice. Furthermore, it addresses the management of abnormalities found during surveillance and topics for future research.
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Affiliation(s)
- Kasper A. Overbeek
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, ‘s Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands,Corresponding author. Fax: +31 10 703 03 31
| | - Djuna L. Cahen
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, ‘s Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands
| | - Marcia Irene Canto
- Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, 1800 Orleans St., Blalock 407, Baltimore, MD, 21287, USA
| | - Marco J. Bruno
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, ‘s Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands
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