摘要
采用磁共振胆道成像(MRC)显示胆道狭窄部位和程度及扩张胆管,检查病人45例(梗阻性黄疸15例,其他病人30例)。采用不屏气快速自旋回波(TSE)、重T_2加权成像技术及三维图像处理。结果显示梗阻性黄疸病人均能显示阻塞部位及扩张胆管,非梗阻性黄疸病人可显示胆总管及左、右肝管起始段,胆道术后病人见肝内外胆管轻度扩张。说明MRC能显示胆道狭窄部位、程度及扩张的胆管,与磁共振(MRI)结合能更准确地诊断胆道阻塞部位及原因。
To evaluate magnetic resonance imaging(MRI)in demonstrating the site and extent of biliary obstruction and dilated bile ducts. Materials and Methods:45 patients (15 cases of obstructve jaundice and 30 other cases) were examined by MRC which was performed with non-breath-hold heavily T2-weighted turbo-spine echo (TSE) sequence. The images were postprocessed on 3 D work station with targeted maximum intensity projection in all cases. Results:The level of biliary obstruction and the dilated biliary tract were visualized in all patients with obstruction. The extrahepatic normal bile ducts were demonstrated in the nonob-structive patients. Three cases of post-choledochotomy showed mild biliary dilation. Non-breath-hold MRC could demonstrate the site and extent of biliary obstruction and show the level and cause of obstruction more accurately when combined with MRI. MRC is a reliable non-invasive method for evaluation of patients with obstruc tive jaundice.
关键词
胆管阻塞
磁共振成像
bile duct obstruction
magnetic resonance imaging
