absorptiometry


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absorptiometry

 [ab-sorp″she-om´ĕ-tre]
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.

absorptiometry

Measurement of absorption, for example, of radiation.

absorptiometry

(əb-zôrp′tē-ŏm′ĭ-trē, -sôrp′-)
n.
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.

Absorptiometry

A 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

ab·sorp·ti·om·e·try

(ăb-sōrp'shē-om'ĕ-trē)
A measure of the absorption of one thing by another, as in the use of x-rays as a means of measuring bone density.
References in periodicals archive ?
(3.) Rosa Lorente-Ramos Javier Azpeitia-Arman Araceli Munoz-Hernandez Jose Manuel arciaGomez Patricia Diez-Martinez Miguel rande-Barez Dual-Energy X-Ray absorptiometry in the Diagnosis of Osteoporosis: A Practical Guide, AJR; 196: 897-904 0361-803X/11/1964-897, 2011.
Keywords: Bone Mineral Density, Chronic Low Back Pain, Dual Energy X-Ray Absorptiometry, Low Back Pain.
A 4-compartment model based validation of air displacement plethysmography, dual energy X-ray absorptiometry, skinfold technique & bio-electrical impedance for measuring body fat in indian adults.
The World Health Organization (WHO) defines osteoporosis using a T-score acquired through dual energy X-ray absorptiometry (DXA) measurements of the hip and spine bone mineral density (BMD), since BMD is a diagnostic classification.
Comparison of multi-frequency bioelectrical impedance analysis with dual-energy X-ray absorptiometry for assessment of percentage body fat in a large, healthy population, Am J Clin Nutr.
Keywords: Cerebral Palsy, CP, Bone mineral density, BMD, Dual energy X-ray absorptiometry, DEXA, Lumber vertebra.
Dual-energy x-ray absorptiometry has received the 'gold standard' title from many resources (5,6,8-10,21).
Total-body dual energy X-ray absorptiometry (DXA) scanning assessed muscle mass and handgrip strength and a chair-rising test evaluated strength at the beginning and end of the study.
An alternative method to be set as a gold standard method is Dualenergy X-ray absorptiometry (DEXA).
Anamnesis, a detailed clinical examination with the distinction between high and low risk factors as well as the quantitative ultrasound (QUS) make it possible to recognize the persons at an increased risk for osteoporosis and to refer them to the bone mineral density measurement (BMD) with double exposition with x-rays by dual-energy x-ray absorptiometry (DEXA) method.
Dual energy x-ray absorptiometry (DXA) is a commonly used two-dimensional in-vivo imaging technique which is able to capture full body projections of mass densities through x-ray technology (Pfeiffer et al., 2010; Durkin et al., 2002).
Total body, lumbar and hip BMD were evaluated at baseline, six and 12 months using dual-energy x-ray absorptiometry. Blood was collected at baseline, six and 12 months to assess levels of blood biomarkers of bone turnover.