Bandai Y, Makuuchi M, Watanabe G, Ito I, Sugiura M, Wada T
J Clin Ultrasound. 1980 Jun;8(3):207-11. doi: 10.1002/jcu.1870080304.
The method of differentiating between the portal vein and the bile ducts by means of their intrahepatic portions was studied. The left branch of the portal vein courses horizontally as the transverse portion, then veers anteriorly at an acute angle to make the umbilical portion. This characteristic form was demonstrated in all normal controls and 95% of the jaundiced patients studied. The left hepatic duct does not curve anteriorly at an acute angle, but branches off to the lateral segment running superior to the umbilical portion. This anatomic relationship and characteristic form of the umbilical portion were useful in differentiating the portal vein and the bile ducts.
研究了通过肝内部分区分门静脉和胆管的方法。门静脉左支水平走行作为横部，然后以锐角向前转向形成脐部。这种特征性形态在所有正常对照以及95%的所研究黄疸患者中均得到证实。左肝管并非以锐角向前弯曲，而是分支至走行于脐部上方的外侧段。脐部的这种解剖关系和特征性形态有助于区分门静脉和胆管。
