What is the purpose of cholangiography?

Cholangiography is a medical imaging technique specifically used to visualize the bile ducts, which are responsible for transporting bile from the liver to the gallbladder and small intestine. The procedure involves the use of a contrast material that is injected into the bile ducts, allowing for clear imaging and identification of any abnormalities, blockages, or conditions affecting the bile ducts.

This procedure is crucial in diagnosing issues such as bile duct obstructions, strictures, or stones, as it provides detailed visual information that cannot be obtained through standard imaging techniques. The focus on the bile ducts distinctly indicates why this choice is the most accurate among the options provided.

The other options reference different organ systems unrelated to the bile ducts, illustrating a misunderstanding of the specific purpose and application of cholangiography in medical diagnostics.