Computed tomography of the heart (CT coronary angiogram) is a procedure used to assess the extent of occlusion in the coronary arteries, usually in order to diagnose coronary artery disease. The patient is injected with an intravenous dye and then their heart is scanned using a CT scanner. This allows practitioners to assess the blood flow to their heart muscle.

Please watch this video for a guided tour through MRI and CT scanning: