An angiogram is a medical imaging procedure that uses X-rays and a contrast dye to visualize the inside of blood vessels and organs, such as the heart, brain, and kidneys. During the procedure, a thin tube called a catheter is inserted into an artery in your groin or arm, guided to the area of interest, and used to inject a special dye. The dye makes the blood vessels visible on X-ray images, revealing blockages, narrowings, or other abnormalities.
What to expect during the procedure
You will lie on an X-ray table and may be given a sedative to help you relax. Your doctor will numb a small area, usually in your groin or wrist, before making a tiny incision to insert the catheter. The catheter is guided to the target area, such as the coronary arteries in your heart. A contrast dye is injected through the catheter, and X-ray pictures are taken as it flows through the blood vessels. You may feel a warm sensation when the dye is injected. The procedure can take from 30 minutes to two hours, depending on the complexity. What an angiogram is used for To detect narrowed or blocked coronary arteries in the heart (coronary angiogram). To identify the source of internal bleeding. To look for blocked blood vessels in other parts of the body, such as the lungs, brain, or legs. To examine the chambers and valves of the heart.
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