Who Should Get a Bone Density Scan?
Bone density testing is used to assess the strength of the bones and the probability of fracture in persons at risk for osteoporosis. The test, referred to as bone densitometry or bone mineral density scan (BMD), is a simple, noninvasive procedure that takes just minutes.
Unlike a bone scan, bone densitometry testing does not involve the administration of radioactive contrast material into the bloodstream. The most commonly used test is known as a dual energy x-ray absorptiometry (DEXA) scan, and it can be performed with devices that measure bone density in the hip and spine, or smaller peripheral devices to measure bone density in the wrist, heel, or finger. The central bone density device is used in hospitals and medical offices, while the smaller peripheral device is available in some drugstores and in screening sites in the community. The DEXA scan involves a much smaller radiation exposure than a standard chest x-ray.
In premenopausal women, estrogen produced in the body maintains bone density. Following the onset of menopause, bone loss increases each year and can result in a total loss of 25%-30% of bone density in the first five to ten years after menopause. Your doctor can help you decide when and if you need a bone density test. In general, this testing is recommended for women 65 and older along with younger postmenopausal women who have further risk factors for osteoporosis, including:
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