Cardiac CT Imaging

Computed Tomography (CT) is used to generate a very clear, three-dimensional image of the heart and great vessels. This enables an expert to analyze the various structures of the heart to determine if there are any abnormalities. CT imaging is often reserved to diagnose a small range of specific conditions (especially disease of the coronary arteries). Your physician will help you make the best choice for your particular condition.

MCG makes use of 64-slice imaging, which can be specially “gated” in order to capture the rapid movements of the heart. This gating involves more images being taken of the heart which accounts for the increased radiation exposure. Intravenous iodine based contrast is used to visualize cardiac structures including coronary arteries, aorta, and veins.

Uses of Cardiac CT

There are a variety of reasons that your physician may request a CT of your heart. These include:

• Assessment of coronary artery anatomy
• Determining Calcium score (how much Ca2+ is in the arteries)
• Assessment of thoracic aorta, pulmonary veins
• Pericardial effusion (Fluid around the heart) and pericardium for thickening of membrane around your heart.
• Masses (Tumor)

Do I Need a CT Image of My Heart?

If you have chest pain or symptoms that suggest cardiac disease, talk to your physician to determine if this test is right for you.

It is not safe for some individuals to undergo CT imaging:

• Patients with Kidney dysfunction (the contrast can be harmful to the kidneys)
• Patients with an allergy to iodine should inform their physician
• Pregnant women
• Patients over 60 years of age or with history of kidney disease should be evaluated before test, to avoid any kidney damage from the contrast.