Frequently Asked Questions about Bone Density Scans

Bone densitometry is a test that can help tell if you have osteoporosis (bone density loss) or are at risk for it.

Osteoporosis is a disease in which bones become fragile and more likely to break. If not prevented or left untreated, osteoporosis can progress painlessly until a bone breaks. These broken bones, also known as fractures, most often occur in the hip, spine and wrist. Prevention and early treatment have a major role in reducing the risk of fractures from osteoporosis.

Unfortunately, osteoporosis is not often detected until a fracture occurs. These fractures can result in pain, height loss, possibly even permanent disability and dependence. There are a number of factors known to increase the risk of developing osteoporosis.

Bone mass can be measured using a simple, painless procedure called bone densitomitry. This procedure uses a small amount of radiation to determine the bone density of the spine or hip. This test can also be used at intervals to determine the rate of bone loss.

During the exam, you will be asked to lie on the table and breathe normally. A scanner will pass over your spine or hip. As the scanner moves, a dual beam of low energy x-ray passes through your body. This produces a very accurate measurement of your bone density. Most exams take about 20 minutes.