翻译：肝内胆管右后支置入PTCD引流后胆汁引流不畅胆红素下降不明显；我们来看看常规超声显示引流管在腹壁与肝脏之间走形有折叠那是因为折叠导致的胆汁引流不畅嘛？ICCEUS显示引流管在腹壁与肝脏之间走形扭曲未在胆管内明确了胆汁引流不畅的原因。

After the right posterior branch of the intrahepatic bile duct was inserted with PTCD drainage, bile drainage was not smooth and bilirubin decreased insignificantly. Let's take a look. Conventional ultrasonography showed that the drainage tube was folded between the abdominal wall and liver, which could be the cause of the poor bile drainage. However, ICCEUS showed that the drainage tube was twisted and not inside the bile duct between the abdominal wall and liver, clearly indicating the reason for poor bile drainage