Each year, more than 800,000 Americans will suffer a heart attack. More than 150,000 will die before they experience their first symptom. Could they have been saved? A relatively new and effective way to screen people at risk for heart disease is called coronary calcium scanning. Calcium scanning has been around since the late 1990s, and started capturing people’s attention when President Bill Clinton had his. Coronary calcium screening uses specialized medical equipment to look at the structure of the heart’s coronary arteries. Much like standard x-rays, calcium scanning can be done using electron beam computed tomography (CT), multidetector CT (MDCT) or electron beam CT (EBT) scanners. The scanners are…