Bone Density

A bone density test — also called densitometry or DXA scan — determines whether you have osteoporosis or are at risk for osteoporosis. Osteoporosis is a disease that causes bones to become more fragile and more likely to break. In the past, osteoporosis could only be detected after you broke a bone. By that time, however, your bones could be quite weak. A bone density test makes it possible to know your risk of breaking bones before the fact. A bone density test uses X-rays to measure how many grams of calcium and other bone minerals are packed into a segment of bone. A bone density test is a fairly accurate predictor of your risk of fracture.