目的探究MRCP联合高分辨率DWI 对非结石性肝外胆管梗阻性病变的定性诊 断价值。方法 对我院肝胆外科收治的52 例非结石性肝外胆管梗阻性病变患者进行 回顾性研究，将其随机分为对照组和研究 组，分别采用单纯MRCP和MRCP联合高分辨 率DWI进行定性诊断，比较两种检查方法 的定性正确率，同时对检查结果进行分 析。结果 对照组对胆总管癌、壶腹癌、 十二指肠乳头癌、胆管炎、十二指肠乳头 炎的诊断符合率分别为66.67%、100%、 40.00%、50.00%、66.67%、61.54%，而研 究组分别为100%、100%、66.67%、100%、 100%、80.00%、92.31%；研究组总符合率 为92.31%，明显高于对照组的61.54%， 差异具有统计学意义(χ2 =5.6841， P=0.0354)；两种方案均能较好的反映该 类疾病的影像学特征。结论 MRCP联合高 分辨率DWI对非结石性肝外胆管梗阻性病 变定性诊断具有较高的准确性，值得临床 推广。

Objective To explorate the value of MRCP combined with high resolution DWI qualitative in diagnosis of non calculus of extrahepatic bile duct obstructive disease. Methods 52 cases of non calculus of extrahepatic bile duct obstructive disease in the Department of hepatobiliary surgery in our hospital were retrospectively analyzed, and they were randomly divided into two groups: The control group were diagnosed by simple MRCP and the research group by MRCP combined with high resolution DWI qualitative. We compared the accuracy of qualitative analysis of two groups , the examination results were analysis as well. Results The control group for the diagnosis of common bile duct carcinoma, ampullary carcinoma, duodenal papillary carcinoma, duodenal papillitis cholangitis, the coincidence rate was 66.67%, 100%, 40%, 50%, 66.67%, 61.54%, while the research group were 100%, 100%, 66.67%, 100%, 100%, 80%, 92.31%; research group total coincidence rate was 92.31% 61.54%, significantly higher than the control group, with significant difference (X2 =5.6841, P=0.0354); these two approaches can reflect the disease imaging features. Conclusion MRCP combined with high resolution DWI has high accuracy on non calculus of extrahepatic bile duct obstructive disease diagnosis,which worth to promote in clinic.