This scan uses CT imaging to capture detailed cross-sectional images of your heart. It evaluates the presence of calcium deposits within the coronary arteries. These deposits are signs of atherosclerosis—even in individuals without symptoms. Your calcium score, calculated from the scan, provides valuable insight into your risk of cardiovascular events.
Cardiac calcium scoring is often used as a preventive screening tool for people with risk factors for heart disease—such as high blood pressure, high cholesterol, diabetes, smoking, a family history of heart attacks, or obesity—even if no symptoms are present.
There’s minimal preparation required. You can take your usual medications, but avoid eating, drinking, caffeine, and smoking for at least four hours before your appointment. Wear loose-fitting clothing and avoid wearing any metal objects. You may be asked to change into a gown. Please advise your doctor or radiographer if you are, or may be, pregnant.
You’ll lie on a flat table that slides into a short tunnel. ECG leads will be placed on your chest to monitor your heart rhythm and guide the timing of the scan. The scan itself takes only a few seconds, and you may be asked to briefly hold your breath to minimise motion. The entire appointment typically takes around 10 minutes.
The procedure is quick, painless, and non-invasive. You may hear slight noises from the scanner. You’ll be in contact with the radiographer at all times via an intercom. Once the scan is complete, you can resume normal activities immediately.
Your images will be reviewed by a specialist radiologist, with a report sent directly to your referring doctor. A calcium score of zero indicates no detectable plaque, while a higher score reflects increasing levels of coronary calcification and potential CAD risk. Your doctor will use these results to guide any further investigations or lifestyle interventions.
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