胰胆管磁共振水成像:快速自旋回波单激发与重T_2序列对照研究  

MR Hydrography of Pancreatobiliary Tracts: Comparison between Heavily T_2-weighted and Projection Single-shot Fast Spin-echo Sequences

作　　者：杨秀军[1] 缪竞陶[1] 何之彦[1] 陶勇浩[1] 陈海曦[1] 刘爱群[1] 李建奇[1] 

机构地区：[1]上海市第一人民医院放射科,上海200080

出　　处：《中国医学影像学杂志》2000年第6期401-404,共4页Chinese Journal of Medical Imaging

摘　　要：目的 :探讨两种MRCP方法显示胰胆道解剖与病变的价值。材料与方法 :回顾性分析 39例明确诊断的胆道系统SS FSE和HT2 FSE资料。结果 :HT2 FSE图像为胰胆管多层冠状源影像 ,10 0 %病例获得了有诊断价值的MIP、SSD和VE等重建影像 ;厚层单层SS FSE序列图像为 1幅胰胆管容积投影像 ,无需重建。HT2 FSE和SS FSE对胆总管、左右肝管及主要属支显示率均达 10 0 % ,胆囊显示率分别为 10 0 %和 76 4% ,胰管显示率分别为 74 4%和 92 3 % ;其对病变总敏感性和准确性前者高于后者。结论 :磁共振水成像为无创性显示胆胰管系统解剖与病理改变的有效方法 ,常规应用HT2 FSE序列 ,患者难以配合时采用SS FSE序列。Purporse:To assess the value of two sequence MRCP in detection of pancreatobiliary anatomy and diseases. Materials and Methods:Thirty-nine patients with confirmed biliary or pancreatic diseases underwent MRCP using heavily T 2-weighted and projection single-shot fast spin-echo sequences on 1.5T scanner. The capability to display the pancreatobiliary anatomy and diseases with projection SS-FSE and three postprocessing HT 2-FSE reconstructions were analysed. Results:The MIP, SSD and VE reconstructions were successfully created in all cases of HT 2-FSE. The sensitivity of SS-FSE and HT 2-FSE was all 100% in demonstration of major bile ducts, 76.4% and 100% of gallbladder respectively and 92.3% and 74.4% of pancreatic ducts respectively. The overall sensitivity and accuracy of HT 2-FSE for pancreatobiliary abnormalities were superior to that of SS-FSE sequence. Conclusions:MR hydrography is an effective noninvasive method to display the pancreatobiliary structures and abnormalities. The HT 2-FSE sequence should be routinely used and, the SS-FSE sequence is only done while the patients couldn′t fit well for a long time.

关 键 词：胆管 MRI 胆道梗阻 对比研究 

分 类 号：R575.704[医药卫生—消化系统]