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Diffusion-weighted imaging of biliopancreatic disorders:Correlation with conventional magnetic resonance imaging

查看全文 作　　者：Nam Kyung [1]Lee;Suk [1]Kim;Gwang Ha [2]Kim;Dong Uk [2]Kim;Hyung Il [3]Seo;Tae Un [4,5]Kim;Dae Hwan [5]Kang;Ho Jin [6]Jang 高影响力作者 机构地区：[1]Department of Radiology,Biomedical Research Institute,Pusan National University Hospital,School of Medicine,Pusan National University,Busan 602-739,South Korea;[2]Department of Internal Medicine,Biomedical Research Institute,Pusan National University Hospital,School of Medicine,Pusan National University,Busan 602-739,South Korea;[3]Department of Surgery,Biomedical Research Institute,Pusan National University Hospital,School of Medicine,Pusan National University,Busan 602-739,South Korea;[4]Department of Radiology,Yangsan Pusan National University Hospital,School of Medicine,Pusan National University,Yangsan 626-770,South Korea;[5]Department of Internal Medicine,Yangsan Pusan National University Hospital,School of Medicine,Pusan National University,Yangsan 626-770,South Korea;[6]Department of Obstetrics and Gynecology,Armed Forces Seoul Hospital,Seoul 110-200,South Korea高影响力机构 出　　处：《World Journal of Gastroenterology》索引2012年第18卷第31期,共16页高影响力期刊 基　　金：Supported by Clinical research grant from Pusan National University Hospital 摘　　要：Diffusion-weighted magnetic resonance imaging(DWI)is a well established method for the evaluation of intracranial diseases,such as acute stroke.DWI for extracranial application is more difficult due to physiological motion artifacts and the heterogeneous composition of the organs.However,thanks to the newer technical development of DWI,DWI has become increasingly used over the past few years in extracranial organs including the abdomen and pelvis.Most previous studies of DWI have been limited to the evaluation of diffuse parenchymal abnormalities and focal lesions in abdominal organs,whereas there are few studies about DWI for the evaluation of the biliopancreatic tract.Although further studies are needed to determine its performance in evaluating bile duct,gallbladder and pancreas diseases,DWI has potential in the assessment of the functional information on the biliopancreatic tract concerning the status of tissue cellularity,because increased cellularity is associated with impeded diffusion,as indicated by a reduction in the apparent diffusion coefficient.The detection of malignant lesions and their differentiation from benign tumor-like lesions in the biliopancreatic tract could be improved using DWI in conjunction with findings obtained with conventional magnetic resonance cholagiopancreatography.Additionally,DWI can be useful for the assessment of the biliopancreatic tract in patients with renal impairment because contrast-enhanced computed tomography or magnetic resonance scans should be avoided in these patients. 关 键 词：磁共振成像 疾病 加权 弥散 表观扩散系数 DWI 评价方法 肾功能不全
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