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Cardiac CT angiography

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Evaluating your heart
using a CT scan

Cardiac computed tomography (CT) angiography is a type of medical exam that combines a CT scan with an injection of a special dye to produce pictures of blood vessels and tissues in your heart. A CT scan is a type of X-ray that uses a computer to make cross-sectional images of your body. The dye injected to perform CT angiography is called a contrast material because it highlights blood vessels and tissues that are being studied. The dye is injected through an intravenous line started in your arm or hand.

You may need this medical test if you have an abnormality that involves the blood vessels of your heart. Doctors will use the information from this test to learn more about your condition and to decide the best way to treat you.