Laing F C, London L A, Filly R A
J Clin Ultrasound. 1978 Apr;6(2):90-4. doi: 10.1002/jcu.1870060205.
The appearance of dilated intrahepatic bile ducts was evaluated on ultrasonograms of 50 patients with proven extrahepatic biliary obstruction. Five characteristic changes allowed differentiation between biliary and portal venous systems. These changes included: 1) alteration in the anatomic pattern adjacent to the main right portal venous segment and the main portal vein bifurcation. 2) Irregular walls of dilated bile ducts. 3) Stellate confluence of dilated bile ducts. 4) Acoustic enhancement by dilated bile ducts. 5) Peripheral location of dilated bile ducts. Many patients exhibited more than one of these findings. Parasagittal scans of the main right portal vein were the most sensitive for detection of intrahepatic ductal dilatation. Recognition of the characteristic changes and knowledge of the portal venous anatomy makes it possible to diagnose extrahepatic biliary obstruction with a high degree of confidence.
在50例已证实存在肝外胆管梗阻的患者的超声检查中，对肝内胆管扩张的表现进行了评估。有五种特征性改变可用于区分胆管系统和门静脉系统。这些改变包括：1）与右门静脉主段和门静脉主干分叉相邻的解剖结构模式改变。2）扩张胆管壁不规则。3）扩张胆管呈星状汇合。4）扩张胆管的声增强。5）扩张胆管位于周边。许多患者表现出不止一种这些表现。右门静脉矢状旁扫描对检测肝内胆管扩张最敏感。认识这些特征性改变并了解门静脉解剖结构，使得能够高度自信地诊断肝外胆管梗阻。
