胆胰管解剖:快速自旋回波单激发与重T_2加权序列磁共振水成像对照研究  

Anatomy of Pancreatobiliary Tracts:The Comparative Study on MR Hydrography UsingHeavily T_2-weighted and Single-shot Fast Spin-echo Sequences

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

机构地区：[1]上海市第一人民医院放射科,上海200080

出　　处：《实用放射学杂志》2001年第10期740-742,共3页Journal of Practical Radiology

摘　　要：目的　对比探讨快速自旋回波单激发 (SS -FSE)与快速自旋回波重T2 加权 (HT2 -FSE)序列磁共振水成像显示胆胰管解剖的价值。方法　应用 1.5T超导MR系统对 5 8例患者行二维冠状面SS -FSE与HT2 -FSE序列扫描。HT2 -FSE源影像数据在工作站作MIP、SSD等后处理。结果　SS -FSE和HT2 -FSE对胆总管、肝总管、左右肝管及主要属支显示率均为 10 0 % ;对胆囊显示率分别为 89.1%和 10 0 % ;对胰管显示率分别为 91.4%和 72 .4%。对胆系和胰管梗阻扩张者 ,两种方法显示率一致 ,均达 10 0 %。在图像质量方面 ,显示胆系解剖HT2 -FSE优于SS -FSE(Ρ <0 .0 1) ,显示胰管解剖SS -FSE优于HT2 -FSE(Ρ <0 .0 1)。结论　胆胰管磁共振水成像宜常规应用HT2 -FSE序列 ,重点观察胰管或患者难以承受磁共振长时检查时可采用SSObjective To detect the value of the heavily T 2-weighted (HT 2-FSE)and the signle-shot fast spin-echo(SS-FSE) sequences in visualization of the anatomy of the pancreatobiliary tracts.Methods Fifty-eight patients with biliary or pancreatic diseases underwent MR cholangiopancreatography(MRCP)with HT 2-FSE and SS-FSE sequences at 1.5 T scanner.MIP and SSD of HT 2-FSE sequence were successfully created on a workstation.Results The sensitivity of SS-FSE and HT 2-FSE was 100% in visualization of major bile ducts,89.1% and 100% respectively for gallbladder and 91.4% and 72.4% respectively for pancreatic ducts.The image quality of HT 2-FSE was superior to that of SS-FSE in showing biliary tracts, while they were opposed in showing pancreatic ducts(Ρ<0.01).The image quality of both sequences was the same in showing dilated pancreatobiliary tracts.Conclusion The HT 2-FSE sequence should be routinely used in MRCP while SS-FSE sequence was only done as the patient couldn't fit or the pancreatic ducts was mainly evaluated.

关 键 词：胆胰管解剖 MMR 成像 对比研究 

分 类 号：R657.4[医药卫生—外科学] R445.2[医药卫生—临床医学]