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Healtheuniversity > English > Cardiac College > Treat Heart Disease > Diagnosing Heart Disease > CT Scan (Computed Tomography Scan)

CT Scan (Computed Tomography Scan)

CT scanner with table
A CT scanner is used to take pictures of your heart

A computed tomography (CT) scan provides 3-D images of the body.

A cardiac CT scan allows doctors to see the anatomy of the heart and how it works. A cardiac CT angiography (CTA) provides accurate images of the coronary arteries.

  • During a cardiac CTA, the person being scanned lies face up on a table that moves through a donut-shaped scanner. This scanner is a special type of x-ray machine.

A cardiac CTA is faster and less invasive than a traditional coronary angiogram.

Cardiac CTAs can provide information on:

  • the presence of individual plaque and calcium deposits in the coronary arteries
  • the severity of coronary artery disease
  • the ejection fraction of the left ventricle (a measure of how well the heart pumps blood to the body
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