A calcium scan, also known as a coronary artery calcium (CAC) scoring or a heart scan, is a non-invasive imaging test using a CT scan to detect calcified plaque in the coronary arteries, which can indicate the presence of coronary artery disease (CAD).234 The scan measures the amount of calcium in the coronary arteries, providing insights into the extent of atherosclerosis, which is the buildup of cholesterol and other substances that can narrow arteries and potentially cause a blood clot.5
The calcium score is categorized into different levels indicating the plaque burden: minimal (1 to 10), mild (11 to 100), moderate (101 to 300), and severe (301 and higher).2 This score helps healthcare providers assess the risk of heart disease and stroke and recommend appropriate preventive measures.5
Calcium from food or supplements does not significantly affect the calcium score in coronary arteries. The calcium detected in the arteries is related to the buildup of plaque and not dietary calcium. (AI-generated answer. Please verify critical facts)
Coronary Calcium Scan | Mayo Clinic
The Heart Test You May need but Likely Haven’t Heard Of | Johns Hopkins Medicine