 Heart disease causes over 600,000 deaths in the United States each year. The most common form of heart disease is coronary artery disease, a major cause of heart attack. High blood pressure, high cholesterol, smoking, diabetes, obesity, and lack of exercise increase your risk. Calcium scoring with cardiac CT can identify plaque buildup in the coronary arteries before symptoms appear. Ask your doctor if cardiac screening is right for you. For more information, visit radiologyinfo.org.