单词 | dual-energy x-ray absorptiometry |
释义 | dual-energy x-ray absorptiometrydual-energy x-ray absorptiometrydual-energy x-ray absorptiometrydual-energy x-ray absorptiometry (DEXA),dual-energy x-ray absorptiometrydual-energy X-ray absorptiometryA technique using two different X-ray beams to estimate bone density in vertebrae and hip, which is the most accurate way to measure bone mineral density. Strong, dense bones allow less of an X-ray beam to pass through them; the amounts that each beam are blocked by bone and soft tissue are compared to each other.Pros DEXA can measure as little as 2% bone loss/year; it is fast and uses very low doses of radiation du·al x-ray ab·sorp·ti·om·e·try(DXA) (dū'ăl eks'rā ăb-sorp'shē-om'ĕ-trē) |
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