dual x-ray absorptiometry

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 DEXA scan, bone mineral density scan, BMD scan, dual energy x-ray absorptiometric scan, DXA, and DEXA.

English dictionary of cancer terms . 2015.

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  • Dual energy X-ray absorptiometry — (DXA, previously DEXA) is a means of measuring bone mineral density (BMD). Two X ray beams with differing energy levels are aimed at the patient s bones. When soft tissue absorption is subtracted out, the BMD can be determined from the absorption …   Wikipedia

  • Dual-energy X-ray absorptiometry — Not to be confused with Bone scan. Dual energy X ray absorptiometry Intervention A scanner used to measure bone density with dual energy X ray absorptiometry. ICD 9 CM …   Wikipedia

  • dual energy X-ray absorptiometry — du·al energy X ray absorptiometry d(y)ü əl n absorptiometry in which the density or mass of a material (as bone or fat) is measured by comparing the amounts of absorption by the material of x radiation of two different energies generated by an X… …   Medical dictionary

  • dual-energy x-ray absorptiometry — ˈ ̷ ̷  ̷ ̷ ˈ ̷ ̷  ̷ ̷  ̷ ̷ noun : absorptiometry in which the density or mass of a material (as bone or fat) is measured by comparing the amounts of absorption by the material of x radiation of two different energies generated by an x ray tube… …   Useful english dictionary

  • dual-energy X-ray absorptiometry — noun Date: 1988 absorptiometry in which the density or mass of a material (as bone) 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 of bone …   New Collegiate Dictionary

  • dual-energy X-ray absorptiometry — DEXA …   The new mediacal dictionary

  • dual energy x-ray absorptiometric scan — 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… …   English dictionary of cancer terms

  • dual photon absorptiometry — n absorptiometry that functions and is used similarly to dual energy X ray absorptiometry but that utilizes X rays generated by a radioscope * * * measurement of the bone mineral content in the axial skeleton, particularly the lumbar spine, by… …   Medical dictionary

  • absorptiometry — ab·sorp·ti·om·e·try äm ə trē n, pl tries the use of an absorptiometer to determine the amount of radiation absorbed (as by living tissue) see DUAL ENERGY X RAY ABSORPTIOMETRY, DUAL PHOTON ABSORPTIOMETRY …   Medical dictionary

  • absorptiometry — noun Etymology: absorption + metry Date: 1951 measurement of the amount of radiation absorbed (as by living tissue) especially to determine density compare dual energy X ray absorptiometry …   New Collegiate Dictionary

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