Percutaneous transhepatic cholangiography and drainage using extravascular contrast enhanced ultrasound

摘要

Background and purpose: Percutaneous transhepatic cholangiography and drainage (PTCD) is a common procedure for the diagnosis and treatment of benign and malignant biliary diseases. Ultrasound (US) is frequently used for the guidance of PTCD. Conventional fluoroscopy is applied to evaluate the biliary system, but delivers significant X-ray dosage to the patient and the interventional team. The purpose of this study is to test the ability of extravascular contrast-enhanced ultrasound (EV-CEUS) in US-guided PTCD to reduce or replace fluoroscopy.