Dual-energy CT

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

• Dual-fired unit —   A generating unit that can produce electricity using two or more input fuels. In some of these units, only the primary fuel can be used continuously; the alternate fuel(s) can be used only as a start up fuel or in emergencies.   U.S. Dept. of… …   Energy terms

• Dual fuel vehicle —   1) A motor vehicle that is capable of operating on an alternative fuel and on gasoline or diesel fuel. These vehicles have at least two separate fuel systems which inject each fuel simultaneously into the engine combustion chamber.   2) A motor …   Energy terms