n the viewing via radiography of potentially blocked areas in the circulatory system. Commonly used to diagnose blood clots, aneurysms, and tumors - as well as the extent to which vessels leading to the heart may be blocked. Initially, a dye is injected in the bloodstream and the flow of blood is followed live on the x-ray. Any blockages or abnormalities are detected by following the pattern of blood flow. The name of the image produced is an angiogram and an arteriography technique is used (the same technique) when specific arteries are thought to be blocked. See also cerebral angiography- digital subtraction angiography.
ANGIOGRAPHY: "The person was given an angiography in order to determine whether there was a blood clot in his lungs. "