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Coronary Artery Calcium (CAC) Scoring

Coronary artery calcium (CAC) scoring, also called a coronary calcium scan, is a test that measures the amount of calcium in the walls of the heart’s arteries. 

Most of the calcium in our body is found in our bones and teeth. It helps keep them strong and healthy. But calcium in the arteries that supply the heart with oxygen and nutrients can spell trouble for our heart health. 

That’s because deposits of calcium in the coronary arteries are a sign that there may also be a buildup of plaque—a waxy substance that can harden over time and narrow or block the arteries (called atherosclerosis). When this happens, it makes a heart attack or stroke more likely. 

So a coronary calcium scan is one way to estimate someone’s risk of developing heart disease or having a heart attack or stroke.


  • Last Edited 11/30/2018