dual–energy X–ray absorptiometry
Medical Definition of dual–energy X–ray absorptiometry
: absorptiometry in which the density or mass of a material (such as bone or fat) is measured by comparing the material's absorption of X-rays of two different energies and which is used especially for determining the mineral content and density of bone A medical exam ascertained bone density by using dual-energy X- ray absorptiometry (DXA), a standard method of assessing the extent of osteoporosis.—Mari N. Jensen, Science News, 9 May 1998—abbreviation DEXA, DXA
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