dual energy x-ray absorptiometry


dual energy x-ray absorptiometry

Measurement of bone mineral density by calculation of the absorptiometry at two different photon energies; used to evaluate osteoporosis at very low dosage.
See also: T-score.

dual energy x-ray absorptiometry

Abbreviation: DEXA; DXA
A radiographic technique used to measure the average density of the mineral concentration of bone (e.g., at the femur, the heel, or the forearm). It is used primarily in the diagnosis of osteopenia and osteoporosis. See also: absorptiometry