A coronary computed tomography angiogram (CTA) uses advanced CT technology, along with intravenous (IV) contrast material (dye), to obtain high-resolution, 3D pictures of the moving heart and great vessels.
CTA is used as a noninvasive method for detecting blockages in the coronary arteries. It looks at the arteries that supply blood to your heart. It might be used to diagnose the cause of chest pain or other symptoms.
A CTA can be performed much faster than a cardiac catheterization, with potentially less risk and discomfort as well as decreased recovery time.