A procedure used to create images of the bile ducts. A contrast medium is injected into the bile ducts to make them show up clearly on the x-ray image.

Doctors use cholangiography to look for tumours, stones, blockages or other signs of disease.

When the contrast medium is injected by passing a needle through the skin and liver into a bile duct, it is called percutaneous transhepatic cholangiography (PTC).

The x-ray image produced is called a cholangiogram.