dual-energy x-ray absorptiometry

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dual-energy x-ray absorptiometry

n. Abbr. DEXA or DXA
Absorptiometry using two x-ray beams at different energy levels, especially in determining bone mineral density.

dual-energy X-ray absorptiometry (DEXA)

n absorciometría de rayos X de energía dual
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Current guidelines recommend an evaluation of bone mineral density (BMD) through dual X-ray absorptiometry (DXA scan) in the general population for women [greater than or equal to] 65 years of age, for men [greater than or equal to] 70 years of age, for persons of any age with history of a fragility fracture, or for any patient with suspected bone impairment.
For example, an 80-year-old woman and a 50-year-old woman with a T-score of -2.5, as measured by dual x-ray absorptiometry (DXA), will have dramatically different fracture risks.
Dual X-ray absorptiometry (DXA) is considered as a "gold-standard" for bone mass assessment.
More importantly, "the minor areal BMD changes detected by dual-energy x-ray absorptiometry did not reflect the underlying structural deterioration seen with high-resolution peripheral quantitative CT Although dual x-ray absorptiometry is the current clinical gold standard for skeletal assessment of fracture risk, it does not capture bone geometry, microarchitecture, or biomechanical properties, which also contribute to fracture risk," Dr.
Lumbar spine, femoral neck and forearm bone mineral content (BMC) and areal density (aBMD) were measured using dual X-ray absorptiometry; lumbar spine and femoral neck apparent density (BMAD) were calculated.
The studies will evaluate as co-primary endpoints the effect of Ostarine on lean body mass assessed by dual x-ray absorptiometry (DXA) and on physical function assessed by the Stair Climb Test (each endpoint ?=0.05) at three months.
BOSTON -- Dual x-ray absorptiometry was a more accurate predictor of obesity than was body mass index in a retrospective comparison of the two measures in 1,234 adults.
"We do propose that dual x-ray absorptiometry [DXA] be done in all children at the time of IBD diagnosis," said Dr.
Bone mineral content (BMC) was measured annually at the total body (TB), including upper and lower limb regions, and biannually at the proximal femur and lumbar spine (LS) using dual x-ray absorptiometry (DXA).
For example, studies using quantitative computed tomography (QCT) report somewhat disparate findings from studies using dual X-ray absorptiometry (DXA) to measure BMD.

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