dual energy X-ray absorptiometry


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-ray tube and which is used esp. for determining bone mineral content abbr. DEXA,{{}}DXA

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(DEXA) an imaging technique that uses two low-dose x-ray beams with different levels of energy to produce a detailed image of body components; used primarily to measure bone mineral density.

Medical dictionary. 2011.

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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 — 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 energy densitometry — bone densitometry using dual energy x ray absorptiometry …   Medical dictionary

  • 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… …   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