dual x-ray absorptiometry
Also found in: Dictionary.
Related to dual x-ray absorptiometry: DXA, bone mineral density, Dual energy X-ray absorptiometry, DEXA scan, Bone Density Test
du·al x-ray ab·sorp·ti·om·e·try(DXA) (dū'ăl eks'rā ăb-sorp'shē-om'ĕ-trē)
Use of low-dose x-radiation of two different energies to measure bone mineral content and fat:lean ratios at different anatomic sites.