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in radiology, the measurement of the degree to which the radiation emitted by a radioisotope is completely dissipated within a tissue.
dual energy absorptiometry (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.
dual photon absorptiometry measurement of bone mineral content in the axial skeleton, particularly the lumbar spine, by comparing transmission of the two separate photoelectric energy peaks emitted by gadolinium 153 through both soft and bone tissues.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Measurement of absorption, for example, of radiation.
Farlex Partner Medical Dictionary © Farlex 2012
A method of chemical analysis in which a sample of a substance is exposed to electromagnetic radiation, and the amount of radiation absorbed is measured to determine the chemical composition or concentration of the substance.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
AbsorptiometryA technique used to assess bone mass, which measures the degree to which radiation emitted by a radioisotope is dissipated in a tissue.
Types Single photon absorptiometry, dual X-ray absorptiometry
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
A measure of the absorption of one thing by another, as in the use of x-rays as a means of measuring bone density.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012