Best method to visualize the proximal bile duct is by:
IOC for proximal pa of biliary tract = Percutaneous transhepatic cholangiogram (both diagnostic and therapeutic) IOC for distal pa of biliary tract = ERCP (both diagnostic and therapeutic) IOC for most of biliary tract pathology like (CBD stone; choledochal cyst; biliary stricture; cholangiocarcinoma) = MRCP (only diagnostic)
Percutaneous transhepatic cholangiogram
EUS
ERCP
Transabdominal USG
JIPMER 2017