CTA - CT Angiogram (Computed Tomography Angiography)

CT angiograms in St. Louis


Coronary computed tomography angiography (CTA) is a heart imaging test that helps determine if plaque buildup has narrowed a patient's coronary arteries, the blood vessels that supply the heart. Plaque is made of various substances circulating in the blood, such as fat, cholesterol and calcium which deposits along the inner lining of the arteries. It can reduce the blood flow, or in some cases, block it completely. This build-up occurs over several years. Coronary CTA is a special type of x-ray examination. Patients undergoing a coronary CTA scan receive an iodine-containing contrast material (dye) as an intravenous (IV) injection to ensure the best possible images of the heart blood vessels.

Imaging Areas

arms and legs, blood, blood vessels, brain, lungs, children, head, neck and thyroid, heart hormone, kidney, pelvis, liver, pancreas, uterus, fallopian tubes, ovary, spine

Typical Preparations

Follow any specific pre-test instruction given to you. Avoid caffeine 24 hours before your exam. Do not eat or drink four hours before your scan. If possible, do not wear clothes that contain metal, such as zippers or metal snaps. Contraindications Please let us know if you: • Are pregnant or nursing • Are allergic to iodine or other contrast dyes used in imaging exams • Have asthma, diabetes, kidney disease or thyroid problems

Offices of Service & Attending Physicians

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