a picture of the biliary tree.

a safeguard for the patient since it helps to confirm that the surgeon has properly identified the anatomy and also the lack of any ductal injury

a test where dye is introduced into the biliary system and outlines the system so that the anatomy is more readily identified

a very important test in diagnosing bile duct cancer because it can find the exact site of the cancer and show how close it is to the liver

radiologic procedure used to look at the gallbladder and bile ducts. See also: Intravenous cholangiogram.