DefinitionBy Mayo Clinic staff
A computerized tomography (CT) coronary angiogram is an imaging test to look at the arteries that supply your heart muscle with blood. Unlike a traditional coronary angiogram, CT angiograms don't use a catheter threaded through your blood vessels to your heart. Instead, a coronary CT angiogram relies on a powerful X-ray machine to produce images of your heart and heart vessels. CT angiograms don't require the recovery time needed with traditional angiograms. Coronary CT angiograms are becoming a common option for people with a variety of heart conditions.
CT angiograms will expose you to a small amount of radiation. If you have known coronary artery disease, a traditional coronary angiogram may be a better option, since you can also receive treatment for your artery blockages during a traditional coronary angiogram.
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