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Pancreas MR

D Cuccurullo, G Carbone, M G Iovino, I De Rosa, M Fabozzi, F Corcione
BACKGROUND: Solid pancreatic pseudopapillary tumors are a rare neoplasms, about 1-3% of all pancreatic neoplasms. This cancer mainly affects women between the third and fourth decade of life. They are not well known; the molecular origins represent a low degree of malignancy, in which the complete resection is curative. We report our experience with a case report of SPT in a young man. PRESENTATION OF CASE: Thirty-six years old male patient with a mass about 10 cm in the pancreatic tail and splenic ilum...
February 9, 2018: International Journal of Surgery Case Reports
Min Wang, Feng Gao, Xiaoqi Wang, Yanqing Liu, Ruoyun Ji, Lizhuo Cang, Yu Shi
BACKGROUND: Early detection and classification of chronic pancreatitis (CP) are both important and challenging. PURPOSE: To investigate the diagnostic performance of MR elastography (MRE) and T1 mapping of the pancreas for different stages of CP. STUDY TYPE: Retrospective. SUBJECTS: Clinical and imaging records of 81 patients (from 5/2015 to 7/2017) with suspected CP were analyzed. Patients were categorized into the normal control (n = 35), mild CP (n = 30), and moderate/severe CP groups (n = 16) according to the Cambridge Classification based on concordant endoscopic retrograde cholangiopancreatography or ultrasound endoscopy findings...
March 14, 2018: Journal of Magnetic Resonance Imaging: JMRI
P Górka, Z M Kowalski, R Zabielski, P Guilloteau
Promotion of microbial butyrate production in the reticulorumen is a widely used method for enhancing forestomach development in calves. Additional acceleration of gastrointestinal tract (GIT) development, both the forestomach and lower parts of the GIT (e.g., abomasum, intestine, and also pancreas), can be obtained by dietary butyrate supplementation. For this purpose, different sources (e.g., butyrate salts or butyrins), forms (e.g., protected or unprotected), methods (e.g., in liquid feed or solid feed), and periods (e...
March 7, 2018: Journal of Dairy Science
Keum Nahn Jee
Mass forming chronic pancreatitis is very rare. Diagnosis could be done by the pathologic findings of focal inflammatory fibrosis without evidence of tumor in pancreas. A 34-year-old man presented with right upper abdominal pain for a few weeks and slightly elevated bilirubin level on clinical findings. Radiological findings of multidetector-row computed tomography, magnetic resonance (MR) imaging with MR cholangiopancreatography and endoscopic ultrasonography revealed focal branch pancreatic duct dilatation with surrounding delayed enhancing solid component at uncinate process and head of pancreas, suggesting branch duct type intraductal papillary mucinous neoplasm...
January 14, 2018: World Journal of Gastroenterology: WJG
Khoschy Schawkat, Michael Ith, Andreas Christe, Wolfgang Kühn, Yojena Chittazhathu, Lauren Bains, Val Murray Runge, Johannes T Heverhagen
OBJECTIVES: To investigate prospectively the repeatability of pancreatic perfusion measurements using arterial spin labelling (ASL) and to determine the increase in perfusion due to secretin stimulation. MATERIAL AND METHODS: An (FAIR)-TrueFISP ASL sequence was applied to determine the perfusion of the pancreatic head in a 3T MRI scanner. Ten healthy volunteers (four men, six women: mean age 28.5 ± 4.6 years; age range 25-40 years) were investigated twice within 1 week...
January 4, 2018: European Radiology
Bella Chamokova, Nina Bastati, Sarah Poetter-Lang, Yesim Bican, Jacqueline C Hodge, Martin Schindl, Celso Matos, Ahmed Ba-Ssalamah
Secretin-enhanced magnetic resonance cholangiopancreatography (S-MRCP) provides a non-invasive way, with which, to evaluate pancreatic duct (PD) anatomy and exocrine pancreatic function. S-MRCP can be added to the routine pancreas MR examination in equivocal cases. Moreover, it can detect subtle PD involvement, allowing diagnosis of early, rather than end-stage, pancreatic diseases. Although S-MRCP is a valuable non-invasive diagnostic method, it is only performed in a few centres due to relative high cost...
February 5, 2018: British Journal of Radiology
Sergej Schneider, Rasmus Irming Jølck, Esther Gera Cornelia Troost, Aswin Louis Hoffmann
PURPOSE: X-ray-based position verification of the target volume in image-guided radiation therapy (IGRT) of patients with pancreatic ductal adenocarcinoma (PDAC) is currently performed on solid fiducial markers that are implanted under endoscopic ultrasonography. A new biodegradable liquid fiducial marker has recently been introduced. To assess its potential use for magnetic resonance imaging (MRI)-guided photon or proton radiotherapy of PDAC, the MRI visibility and artifacts of this marker were quantified and compared against solid gold markers...
January 2018: Medical Physics
Shengming Deng, Zhifang Wu, Yiwei Wu, Wei Zhang, Jihui Li, Na Dai, Bin Zhang, Jianhua Yan
The objective of this meta-analysis is to explore the correlation between the apparent diffusion coefficient (ADC) on diffusion-weighted MR and the standard uptake value (SUV) of (18)F-FDG on PET/CT in patients with cancer. Databases such as PubMed (MEDLINE included), EMBASE, and Cochrane Database of Systematic Review were searched for relevant original articles that explored the correlation between SUV and ADC in English. After applying Fisher's r-to-z transformation, correlation coefficient (r) values were extracted from each study and 95% confidence intervals (CIs) were calculated...
2017: Contrast Media & Molecular Imaging
Jong Eun Lee, Sang Soo Shin, Shin Jung Kim, Suk Hee Heo, Hyo Soon Lim, Jin Woong Kim, Yong Yeon Jeong
Developmental anomalies and anatomic variants of the pancreas vary widely, and most of them are encountered incidentally during radiologic evaluation. However, some of these anomalies and variants are potentially pathologic and may cause various clinical presentations in childhood or adulthood. The early identification of these entities in various imaging modalities including ultrasound, computed tomography (CT), and magnetic resonance (MR) imaging would be valuable in making correct diagnoses and, in turn, preventing unnecessary additional procedures...
September 19, 2017: Clinical Imaging
Yohann Renard, Gabriela Hossu, Bailiang Chen, Marine Krebs, Marc Labrousse, Manuela Perez
The objective of this study was to develop a simple and useful injection protocol for imaging cadaveric vascularization and dissection. Mixtures of contrast agent and cast product should provide adequate contrast for two types of ex vivo imaging (MRI and CT) and should harden to allow gross dissection of the injected structures. We tested the most popular contrast agents and cast products, and selected the optimal mixture composition based on their availability and ease of use. All mixtures were first tested in vitro to adjust dilution parameters of each contrast agent and to fine-tune MR imaging acquisition sequences...
January 2018: Journal of Anatomy
Yoshihiko Fukukura, Yuichi Kumagae, Hiroto Hakamada, Toshikazu Shindo, Koji Takumi, Kiyoshisa Kamimura, Masanori Nakajo, Aya Umanodan, Takashi Yoshiura
OBJECTIVE: To assess the feasibility of computed diffusion-weighted imaging (cDWI) in comparison with directly acquired DWI for visualizing pancreatic adenocarcinomas. MATERIALS AND METHODS: Patients with pancreatic adenocarcinoma underwent DWI at b-values of 0, 1000 (DWI1000), 1500 (DWI1500) and 2000 (DWI2000) s/mm(2). From DWIs at b-values of 0 and 1000s/mm(2), we generated cDWIs at b-values of 1500 (cDWI1500) and 2000 (cDWI2000) s/mm(2). DWI findings of pancreatic adenocarcinomas (clear hyperintensity; hyperintensity with an unclear distal border; and isointensity), the image quality and the tumor to pancreas contrast ratio (CR) were compared between directly acquired DWI and cDWI...
October 2017: European Journal of Radiology
Alejandro Garces-Descovich, Kevin Beker, Manuel Castillo-Angeles, Alexander Brook, Elena Resnick, Shweta Shinagare, Robert M Najarian, Koenraad J Mortele
PURPOSE: To describe the high-resolution cross-sectional (MDCT/MRI) features of mucinous cystic neoplasms (MCN) of the pancreas with clinico-pathologic correlation; to identify imaging predictors of high-grade dysplasia/carcinoma; and to estimate MCN growth rate. MATERIALS AND METHODS: Thirty-two women (mean age: 46; range, 25-79 years) with resected MCN who underwent preoperative MDCT (n = 20) or MRI (n = 12) examinations over a 14-year period were included...
September 21, 2017: Abdominal Radiology
Miloslav Polasek, Yan Yang, Daniel T Schühle, Mohammad A Yaseen, Young R Kim, Yu Sub Sung, Alexander R Guimaraes, Peter Caravan
Fibrosis with excessive amounts of type I collagen is a hallmark of many solid tumours, and fibrosis is a promising target in cancer therapy, but tools for its non-invasive quantification are missing. Here we used magnetic resonance imaging with a gadolinium-based probe targeted to type I collagen (EP-3533) to image and quantify fibrosis in pancreatic ductal adenocarcinoma. An orthotopic syngeneic mouse model resulted in tumours with 2.3-fold higher collagen level compared to healthy pancreas. Animals were scanned at 4...
August 14, 2017: Scientific Reports
Navid Farr, Yak-Nam Wang, Samantha D'Andrea, Frank Starr, Ari Partanen, Kayla M Gravelle, Jeannine S McCune, Linda J Risler, Stella G Whang, Amy Chang, Sunil R Hingorani, Donghoon Lee, Joo Ha Hwang
PURPOSE: The lack of effective treatment options for pancreatic cancer has led to a 5-year survival rate of just 8%. Here, we evaluate the ability to enhance targeted drug delivery using mild hyperthermia in combination with the systemic administration of a low-temperature sensitive liposomal formulation of doxorubicin (LTSL-Dox) using a relevant model for pancreas cancer. MATERIALS AND METHODS: Experiments were performed in a genetically engineered mouse model of pancreatic cancer (KPC mice: LSL-Kras(G12D/+); LSL-Trp53(R172H/+); Pdx-1-Cre)...
July 17, 2017: International Journal of Hyperthermia
Harrison Kim, Mina Mousa, Patrick Schexnailder, Robert Hergenrother, Mark Bolding, Bernard Ntsikoussalabongui, Vinoy Thomas, Desiree E Morgan
PURPOSE: The aim of this study was to develop a portable perfusion phantom and validate its utility in quantitative dynamic contrast-enhanced magnetic resonance imaging of the abdomen. METHODS: A portable perfusion phantom yielding a reproducible contrast enhancement curve (CEC) was developed. A phantom package including perfusion and static phantoms were imaged simultaneously with each of three healthy human volunteers in two different 3T MR scanners. Look-up tables correlating reference (known) contrast concentrations with measured ones were created using either the static or perfusion phantom...
October 2017: Medical Physics
C Bourgioti, O Preza, E Panourgias, K Chatoupis, A Antoniou, M E Nikolaidou, L A Moulopoulos
Endometriosis is a common gynecological disorder defined by the presence of endometrial tissue outside the uterus. It is the most common cause of chronic pelvic pain and typically affects the ovaries, uterine ligaments, peritoneum, tubes, rectovaginal septum and bladder. It may, however, be found at various extrapelvic sites, including the perineum, liver, pancreas, lung or even the central nervous system, and in such cases, diagnosis may be quite challenging. Even though definitive diagnosis requires laparoscopy, preoperative identification of endometriosis is important not only to differentiate it from other diseases with similar clinical presentations but also, for accurate presurgical mapping, since complete removal of all endometriotic foci is critical for the effective treatment of the patient's symptoms...
November 2017: Diagnostic and Interventional Imaging
Cyril J Ferrer, Lambertus W Bartels, Marijn van Stralen, Baudouin Denis de Senneville, Chrit T W Moonen, Clemens Bos
PURPOSE: To demonstrate that fluid filling of the digestive tract improves the performance of respiratory motion-compensated proton resonance frequency shift (PRFS)-based magnetic resonance (MR) thermometry in the pancreas. MATERIALS AND METHODS: In seven volunteers (without heating), we evaluated PRFS thermometry in the pancreas with and without filling of the surrounding digestive tract. All data acquisition was performed at 1.5T, then all datasets were analyzed and compared with three different PRFS respiratory motion-compensated thermometry methods: gating, multibaseline, and referenceless...
June 24, 2017: Journal of Magnetic Resonance Imaging: JMRI
Nicole Schwendener, Christian Jackowski, Frederick Schuster, Anders Persson, Marcel J Warntjes, Wolf -Dieter Zech
OBJECTIVES: The present study aimed to evaluate if simultaneous temperature-corrected T1, T2, and proton density (PD) 1.5 T post-mortem MR quantification [quantitative post-mortem magnetic resonance imaging (QPMMRI)] is feasible for characterizing and discerning non-pathologic upper abdominal organs (liver, spleen, pancreas, kidney) with regard to varying body temperatures. METHODS: QPMMRI was performed on 80 corpses (25 females, 55 males; mean age 56.2 years, SD 17...
June 17, 2017: International Journal of Legal Medicine
Salvatore Paiella, Harmony Impellizzeri, Elisabetta Zanolin, Giovanni Marchegiani, Marco Miotto, Anna Malpaga, Riccardo De Robertis, Mirko D'Onofrio, Borislav Rusev, Paola Capelli, Sara Cingarlini, Giovanni Butturini, Maria Vittoria Davì, Antonio Amodio, Claudio Bassi, Aldo Scarpa, Roberto Salvia, Luca Landoni
AIM: To establish the ability of magnetic resonance (MR) and computer tomography (CT) to predict pathologic dimensions of pancreatic neuroendocrine tumors (PanNET) in a caseload of a tertiary referral center. METHODS: Patients submitted to surgery for PanNET at the Surgical Unit of the Pancreas Institute with at least 1 preoperative imaging examination (MR or CT scan) from January 2005 to December 2015 were included and data retrospectively collected. Exclusion criteria were: multifocal lesions, genetic syndromes, microadenomas or mixed tumors, metastatic disease and neoadjuvant therapy...
May 7, 2017: World Journal of Gastroenterology: WJG
F Soberon, M E Van Amburgh
Historically, mammary gland growth has been considered isometric the first 2 mo of life and then allometric until peripuberty. However, recent work indicated that the mammary gland might be responsive to nutrient intake preweaning. The objectives of this study were to describe the effects of nutrient intake preweaning on mammary gland development and to investigate cell specific proliferation during this phase of development. Twelve dairy heifer calves were fed either a fixed amount of milk replacer (MR; control, n = 6) or an amount of MR adjusted for BW (enhanced, n = 6)...
April 5, 2017: Journal of Dairy Science
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