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Bone Densitometry Systems

A review of emerging trends in dual-energy X-ray absorptiometry (DXA)

A review of emerging trends in dual-energy X-ray absorptiometry (DXA). Kevin E. Wilson

New developments in dual-energy X-ray absorptiometry (DXA) technology are leading to major improvements in diagnosing osteoporosis, more accurately determining future fracture risk and, most recently, even diagnosing cardiovascular disease. New fan-beam DXA systems can detect vertebral fractures with fast, low-dose lateral scans of the vertebra from T4 to L4 in as little as 10 seconds. Vertebral fractures are the most common fracture in osteoporosis and an indication for treatment irrespective of Bone Mineral Density [1-3]. However, without a diagnostic test such as that available on fan-beam DXA systems, as many as 75% of vertebral fractures would never come to clinical attention [4]. Some DXA systems can measure bone structure and strength using conventional DXA scans. Three-dimensional DXA scans take advantage of the rotating C-arms found on some of the newer DXA systems. Recently, a DXA manufacturer received FDA clearance to assess an important risk factor for heart attacks and stroke - Abdominal Aortic Calcifications (AAC) - using the same scan.

Read more about A review of emerging trends in dual-energy X-ray absorptiometry (DXA) A review of emerging trends in dual-energy X-ray absorptiometry (DXA)




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