dual-energy x-ray absorptiometry


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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.

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.

dual-energy x-ray absorptiometry (DEXA)

an imaging technique for quantifying bone density, used in the diagnosis and management of osteoporosis.

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.

Pros
DEXA can measure as little as 2% bone loss/year; it is fast and uses very low doses of radiation

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.

dual-energy X-ray absorptiometry

; DEXA imaging modality allowing bone mass evaluation, e.g. in osteoporosis

dual-energy x-ray absorptiometry,

n diagnostic test used to determine bone density and to diagnose and monitor osteoporosis.
References in periodicals archive ?
Based on product, the global body composition analyzers market is segmented into Bioimpedance Analyzers (BIA), Dual-Energy X-ray Absorptiometry (DEXA), Skinfold Calipers, Air Displacement Plethysmography (ADP), and Hydrostatic Weighing, wherein the bioimpedance analyzers segment dominates the market with 40.
The results of dual-energy x-ray absorptiometry of the lumbar spine (table 1) and a karyotype report of 45,XO confirmed the diagnosis.
Researchers measured the body-composition of 42 couples using a sophisticated technique called dual-energy X-ray absorptiometry (DXA).
Their tools are education, dual-energy x-ray absorptiometry and vertebral fracture assessment.
Investigators examined the children from 3 months of age to 6 years, including measurements of height, weight, skin fold thickness, and fat mass and lean mass by dual-energy x-ray absorptiometry (DXA).
Only three and one half pages are devoted to the "gold standard" diagnostic modality, dual-energy x-ray absorptiometry (DEXA or DXA).
QUS discriminates patients with hip fracture equally well as dual-energy x-ray absorptiometry and independently of bone mineral density.
Machines that scan the body, such as computed tomography (CT) or dual-energy x-ray absorptiometry (DEXA), are more objective and less variable, but these scans can be expensive and the measurements they provide depend on the sex of the patient.
But newer technologies, such as dual-energy x-ray absorptiometry (DEXA) and air-displacement techniques (Bod Pod), have emerged to analyze body composition in a less-time-consuming and efficient way.
DEXA, or dual-energy X-ray absorptiometry, is the gold standard test for bone density.
A medical exam ascertained bone density by using dual-energy X-ray absorptiometry (DXA), a standard method of assessing the extent of osteoporosis.
Mitchell can also check body composition closer to home with a Dual-Energy X-ray Absorptiometry (DEXA) unit next to his Beltsville lab.