An imaging test that measures bone density (the amount of bone mineral contained in a certain volume of bone) by passing x-rays with two different energy levels through the bone. It is used to diagnose osteoporosis (decrease in bone mass and density). Also called BMD scan, bone mineral density scan, DEXA, DEXA scan, dual energy x-ray absorptiometri...
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Type: Term Definitions: 1. Abbreviation for dual energy x-ray absorptiometry.
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DXA: Dual X-ray absorptometry. A technique for scanning bone and measuring bone mineral density (BMD). A DXA scanner is a large machine that produces 2 X-ray beams, each with different energy levels. One beam is high energy while the other is low energy. The amount of x-rays that pass through the bone is measured for each beam. This will vary depen...
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