Coronary Artery Calcium Scans (IMAGE) UT Southwestern Medical Center Caption Coronary artery calcium scans, such as one shown here, are used to detect the amount of calcium lining the heart's arteries and assess the risk of heart attack or stroke. Credit UT Southwestern Medical Center Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.