what is a coronary angiography test ?
Coronary angiography (an-jee-OG-rah-fee) is a test that uses dye and special x rays to show the insides of your coronary arteries. The coronary arteries supply oxygen-rich blood to your heart. A waxy substance called plaque (plak) can build up inside the coronary arteries.
Angiography is an x-ray study of the arteries. This procedure involves injecting a contrast material (x-ray dye) into a blood vessel to make it visible on an x-ray.he procedure is often used to detect abnormalities of the blood vessels, such as narrowing and blockage caused by fatty deposits or blood clots, and aneurysms (defined as weakening or ballooning of the wall of the artery).