改良快速自旋回波在MR胰胆管成像中的应用

Application of Modified FSE in MR Cholangiopancreatography

目的：探讨改良快速自旋回波在胰胆管ＭＲＩ成像中的临床应用价值。材料与方法：３例胆囊摘除术后，４例胆结石，１例肝硬化并肝功能不全患者以及２名健康志愿者。应用改良快速自旋回波和脂肪抑制序列行ＭＲＩ检查，被检者屏气１８ｓ进行信号采集，经过重建而获得胰胆管成像。结果：胆囊（除３例已摘除外）７例中显示６例，１例胆囊内充满结石而不显示，胆总管，肝总管及左右肝管分别显示９例，主胰腺管显示３例。胆囊结石３例被检出，表现为胆囊内大小不等之圆形低信号区。结论：应用改良快速自旋回波技术，减少信号采集时间，缩短了ＭＲ胰胆管成像中患者的屏气时间。

Purpose: To investigate MR imaging features of the biliary tract and the main pancreatic duct using a modified fast spin echo (FSE) technique. Materials and Methods: 3 patients with post-cholecystectomy, 4 patients with gallbladder stones, 1 patient with hepatic insufficiency and 2 men health volunteers underwent MR cholangiopancreatography (MRCP) using a modified fast spin echo with STIR while breath-hold period of 18 seconds respectively. Results: the gallbladder was visualized in 6 of 7 cases excepting 3 cases whose gallbladders had removed by cholecystectomy, gallbladder was not visualized in 1 case due to its cavity was occupied by multiple gallbladder stones. The common bile duct and the left and right hepatic duct were found in 9 and main pancreatic duct was visualized in 3 of all cases. Gallbladder stone was diagnosed in 3 with representng variant size, rounded hypointense foci in the gallbladder. Conclusion: the MRCP with modified FSE could demonstrate pancreaticobiliary ductal system and diagnose cholangiopancreatic disorders with a short breath-hold period.