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The most recent osteoporosis guidelines, based on the latest research and consensus among physician groups, is that DEXA scan should start at age 65 for healthy women not at particular risk for osteoporosis.[1] Thereafter, women should undergo a DEXA scan every 2 to 5 years, depending on their osteoporosis risk factors. Unfortunately, recent evidence shows that many older women are not receiving the proper screening and treatment. Despite the standard recommendation for screening of all women aged 65 years and older, only about 30-50% of eligible women get a bone density test.[2]
Bone density scanning, also called dual-energy x-ray absorptiometry (DEXA) or bone densitometry, is an enhanced form of x-ray technology that is used to measure bone loss. DEXA is today's established standard for measuring bone mineral density (BMD). An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging. DEXA is most often performed on the lower spine and hips.