Coronary calcium scans use a special X-ray test called computed tomography (CT) to check for the buildup of calcium in plaque on the walls of the arteries of the heart. ┬áIt shows how much hardening of the artery walls exist in order to determine your risk of heart attack. The test tells your doctor how at-risk you are so you can work together to treat the problem and avoid damage from heart attack or stroke. Continue reading →