肝外胆管梗阻的磁共振胆胰管造影

目的评价磁共振胆胰管造影(MRCP)对肝外胆管梗阻性疾病的诊断价值.方法 71例梗阻性黄疸患者均采用岛津公司0.5 T SMT-50X型磁共振成像仪进行扫描,采用自旋回波(SE)重T2加权、三维(3D)数据采集成像技术.结果 MRCP显示肝内胆管扩张的程度、肝内外胆管是否一致性扩张及阻塞段是否突然中断与梗阻性质有一定关系.结合MRCP原始图像及MR常规扫描可明显提高诊断准确率,特别是对胆管结石的诊断准确率.结论 MRCP检查对肝外胆管梗阻的定位、定性诊断具有较高的准确性.

MR cholangiopancreatography in diagnosis of extrahepatic bile duct obstruction

Objective To evaluate the clinical value of MR cholangiopancreatography(MRCP)in diagnosis of extrahepatic biliary obstructive disease.Methods There are 71 patients(41 men,30 women) in all whose age was from 21 to 85 years,with average of 63 years.B ultrasound was performed in all the patients,CT scans in 41 cases,PTC in 3 cases,and ERCP in 5 cases.All the patients were scanned by 0.5 T SMT 50X magnetic imaging apparatus of Shimadzu.Heavy T2 weighted SE sequence with three dimensional(3D) data collection imaging techniques was used.Results It is found that the obstructive nature is defintely associated with the dilated degree of intrahepatic bile duct,consistent dilation of intrahepatic and extraheoatic bile duct and abrupt interruption of obstructive segment or not.Combining with the MRCP source images and routine MRI scanning for analysis,the diagnosticrate may obviously improve,especially for bile duct stone.Conclusions MRCP can accurately define the diagnosis of extrahepatic bile duct obstruction,and the obstructive position.