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目的探讨磁共振胰胆管成像(MRCP)结合常规磁共振(MR)对恶性胆道梗阻的诊断价值。方法回顾性分析33例经手术、病理证实恶性胆道梗阻病例的MRCP、常规MR图像。结果梗阻部位分别为肝门部以上胆管,胰头上方胆总管水平,胰内段胆总管水平。所有病例均显示胆管扩张。梗阻末端胆管形态分别为乳头状、尖锥状、鸟嘴状、环状。常规MR图像可直接显示病变部位异常软组织信号,部分可见转移征象。MRCP定位准确率88%,定性准确率64%,MRCP结合常规MR定位准确率97%,定性准确率82%。结论MRCP结合常规MR检查明显提高恶性胆道梗阻诊断的准确率。
Objective To investigate the value of magnetic resonance cholangiopancreatography (MRCP) combined with conventional magnetic resonance (MR) in the diagnosis of malignant biliary obstruction. Methods Retrospective analysis of 33 cases of pathologically confirmed malignant biliary obstruction MRCP, MR images. Results obstructive site were more than the hilar bile duct, pancreatic head above the common bile duct, common bile duct within the level of pancreatic. All cases showed dilatation of the bile duct. Obstructive end of the bile duct shape were papillary, cone-shaped, beak-like, ring. Conventional MR images can directly display the abnormal soft tissue lesions signal, part of the visible signs of metastasis. MRCP positioning accuracy of 88%, 64% qualitative accuracy, MRCP combined with conventional MR positioning accuracy of 97%, the qualitative accuracy of 82%. Conclusion MRCP combined with conventional MR examination significantly improves the diagnostic accuracy of malignant biliary obstruction.