翻译：评价梗阻性黄疸的梗阻部位、狭窄程度、左右肝内胆管的相通性；评价引流管的引流效果实时优化置管策略；诊断相关并发症如脱管胆管血管瘘等。

Evaluate the site and degree of obstruction of obstructive jaundice, as well as the patency of the intrahepatic bile ducts on both sides; evaluate the drainage effect of the drainage tube, and optimize the placement strategy in real time; diagnose related complications such as dislodgement, bile duct-vascular fistula, etc.