Angiogram of Healthy Heart
Photograph by SPL/Photo Researchers, Inc.
The picture of health, an angiogram of a human heart shows blood vessels in sharp detail. To take an angiogram, or arteriogram x-ray, doctors must first inject the patient with a special opaque dye that allows a clear view of the heart's blood vessels, including the large left and right coronary arteries. Narrowed arteries indicate the presence of coronary artery disease. Blockages of either of the coronary arteries could lead to a heart attack. Such x-rays help doctors determine a course of treatment.