What is a DEXA bone densitometry exam?
(A) DEXA (dual energy x-ray absorptiometry) is the gold standard for osteoporosis detection. Bone densitometry is a safe, painless study that measures the amount of bone mineral content in specific areas of the body. The exam uses small amounts of x-ray radiation to produce images of the spine, hip or wrist, where most osteoporotic fractures occur. The x-ray is composed of two energy levels that are absorbed differently by bones. A computer determines from these differences how much bone mineral is present.
