Dexa is the technique of choice to diagnose osteoporosis and to monitor the response to treatment. Use absolute value in grams per cm2 from now and prior dexa scan not the tscore. Also sometimes called dxa, dexa is often time performed on the spine and hips however the whole body is sometimes scanned. The dexa scanner rapidly directs xray energy from two different sources towards the bone being examined in an alternating fashion at a set and. Dxpl uses an xray source at 78 kvp and a kedge filter to produce stable beams of x rays at energies of 38 and 70 kev. Dexas precision, accuracy, and versatility make it extremely useful in a research setting. Measuring bone density connectivity using dual energy x. Overview of dual energy xray absorptiometry dxa will be used to assess overall skeletal changes that often occur with age by measuring bone mineral content bmc and bone mineral density bmd. Dual energy xray absorptiometry dxa scans for screening purposes frequency limits dualenergy xray absorptiometry dxa is an enhanced xray technology that is used to measure bone density and bone loss. Dualenergy xray absorptiometry dexa is a useful technique for monitoring longterm nutritional progress by measuring changes in body tissue composition, including lean body mass, fat mass, and bone density. Dual energy xray absorptiometry dxa procedures manual.
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