dual energy x-ray absorptiometry


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Related to dual energy x-ray absorptiometry: DEXA scan, Bone Density Test

dual energy x-ray absorptiometry

Measurement of bone mineral density by calculation of the absorptiometry at two different photon energies; used to evaluate osteoporosis at very low dosage.
See also: T-score.

dual energy x-ray absorptiometry

Abbreviation: DEXA; DXA
A radiographic technique used to measure the average density of the mineral concentration of bone (e.g., at the femur, the heel, or the forearm). It is used primarily in the diagnosis of osteopenia and osteoporosis.
See also: absorptiometry
References in periodicals archive ?
A comparison of dual energy x-ray absorptiometry and two bioelectrical impedance analyzers to measure body fat percentage and fat-free mass index in a group of Mexican young women.
(2009b) Measurement of body segment parameters using dual energy X-ray absorptiometry and three-dimensional geometry: an application in gait analysis.
Chemical versus dual energy x-ray absorptiometry for detecting age-associated body compositional changes in male rats.
The recent methods in general medicine are based on the measurement of photon and X-ray absorption followed by computerized analysis (single photon absorptiometry, single energy x-ray absorptiometry, dual photon absorptiometry, dual energy X-ray absorptiometry).
It uses Dual Energy X-ray Absorptiometry (DEXA) technology, enabling real-time scanning of both meat and poultry for foreign objects and meat composition.
The new DEXA (Dual Energy X-ray Absorptiometry) service will treat 4,000 patients a year from Dudley and the surrounding areas of south Staffordshire, Wyre Forest, Tipton and Rowley Regis.
All subjects had a full hormonal profile, bio-impedance estimation of body fat, and dual energy x-ray absorptiometry and quantitative peripheral CT scans (pQCT) to determine bone density.
In the first study (involving nearly 6,000 men), the mean bone mineral density (BMD) at the lumbar spine for the 158 participants using an SSRI at the time of a baseline dual energy x-ray absorptiometry scan was 4.6% lower than in nonusers, Elizabeth McKinstry Haney, M.D., said at the annual meeting of the American Society for Bone and Mineral Research.
A variety of methods can be used, such as air-displacement plethysmography (ADP), bioelectrical impedance analysis (BIA), computerized tomography (CT), dual energy x-ray absorptiometry (DEXA), hydrostatic (underwater) weighing and near infrared reactance.
In the first study (involving nearly 6,000 men), the mean bone-mineral density (BMD) at the lumbar spine for the 158 participants using an SSRI at the time of a baseline dual energy x-ray absorptiometry scan was 4.6% lower than in nonusers, Elizabeth McKinstry Haney, M.D., said at the annual meeting of the American Society for Bone and Mineral Research.
Each participant received bone mineral density testing of the left hip, spine and total body using dual energy X-ray absorptiometry (DEXA) technology.

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