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What Is a Cardiac CT Scan?
Cardiac computed tomography (cardiac CT) is a fast, non-invasive imaging technique that uses X-rays and computer processing to create detailed three-dimensional images of the heart and coronary arteries....
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Dr. Maria Santos
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|May 2, 2026Medically reviewed by Dr. Maria Santos · Editorial Policy
Cardiac computed tomography (cardiac CT) is a fast, non-invasive imaging technique that uses X-rays and computer processing to create detailed three-dimensional images of the heart and coronary arteries. In the past decade, advances in CT technology have made cardiac CT an increasingly important tool in cardiovascular diagnosis — offering information that was previously obtainable only through invasive procedures like cardiac catheterization.
How Cardiac Ct Works
CT scanning uses a rotating X-ray beam and detectors to acquire hundreds of X-ray images from multiple angles around the body. A computer then reconstructs these projections into cross-sectional and three-dimensional images with extraordinary anatomical detail.
The challenge in cardiac CT is the constantly moving heart. Modern cardiac CT scanners address this through:
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Primary Source
American Heart Association: Cardiac CTMedical Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of your physician or other qualified health provider with any questions you may have regarding a medical condition.
Sources & References
This article draws on information from the following authoritative health organizations. Always consult a qualified healthcare professional for personal medical advice.