What is an X-ray of the major bile ducts following an intravenous injection of a contrast medium called?

An X-ray of the major bile ducts following an intravenous injection of a contrast medium is called a cholangiogram. This imaging technique is used to visualize the bile ducts and can help diagnose blockages, stones, or other abnormalities in the biliary system. It is commonly performed during procedures like endoscopic retrograde cholangiopancreatography (ERCP).