dual-energy x-ray absorptiometry

Also found in: Dictionary, Wikipedia.
Related to dual-energy x-ray absorptiometry: DEXA, DEXA scan, Bone densitometry

dual-energy x-ray absorptiometry (DEXA),

Use of low-dose x-radiation of two different energies to measure bone mineral content at different anatomic sites.
Farlex Partner Medical Dictionary © Farlex 2012

dual-energy x-ray absorptiometry

n. Abbr. DEXA or DXA
Absorptiometry using two x-ray beams at different energy levels, especially in determining bone mineral density.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

dual-energy X-ray absorptiometry

A technique using two different X-ray beams to estimate bone density in vertebrae and hip, which is the most accurate way to measure bone mineral density. Strong, dense bones allow less of an X-ray beam to pass through them; the amounts that each beam are blocked by bone and soft tissue are compared to each other.

DEXA can measure as little as 2% bone loss/year; it is fast and uses very low doses of radiation
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

du·al x-ray ab·sorp·ti·om·e·try

(DXA) (dū'ăl eks'rā ăb-sorp'shē-om'ĕ-trē)
Use of low-dose x-radiation of two different energies to measure bone mineral content and fat:lean ratios at different anatomic sites.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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.
Comparisons of a multi-frequency bioelectrical impedance analysis to the dual-energy X-ray absorptiometry scan in healthy young adults depending on their physical activity level.
Fundamentals and pitfalls of bone densitometry using dual-energy X-ray absorptiometry (DXA).
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.
Dual-energy x-ray absorptiometry (GE Lunar Prodigy software version 13.60, Madison, WI) was used to assess body fat percentage.
The BMD of the whole body, the lumbar spine and left hip sites (total, neck, trochanter, intertrochanter and Ward's triangle) were measured using dual-energy X-ray absorptiometry.
Skinfold method vs dual-energy x-ray absorptiometry to assess body composition in normal and obese women.
Researchers who analyzed medical records of more than 50,000 women discovered that nearly half of women who were age 65 and older had not had a dual-energy X-ray absorptiometry (DXA) scan, a test that measures bone mineral density and reveals whether osteoporosis is present.
This study has shown that there is no statistically significant difference between T-score values obtained by quantitative ultrasound and those obtained by dual-energy x-ray absorptiometry measurement.
(2008) Estimation of stature and length of limb segments in children and adolescents from whole-body dual-energy X-ray absorptiometry scans.
Men at increased risk for osteoporosis should undergo bone mineral density (BMD) testing using central dual-energy X-ray absorptiometry (DXA).
Bone mineral density (BMD) of lumbar spine, forearm, hip and whole body was assessed at baseline and at the end of the study using dual-energy X-ray absorptiometry. Blood samples were collected at baseline, 3, 6 and 12 months to assess bone biomarkers.

Full browser ?