DEXA


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Related to DEXA: dexamethasone

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.

DEXA

DEXA

abbr.
dual-energy x-ray absorptiometry

DEXA

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

DEXA

Abbreviation for dual-energy x-ray absorptiometry.

DEXA

dual emission X-ray absorptiometry

DEXA

dual-energy X-ray absorptiometry

DEXA,

References in periodicals archive ?
Alendronat alan 9 olgunun DEXA z skorunun -3,2'den -1,8'e, pamidronat alan 9 olgunun DEXA z skoru -3,2'den -2,1'e geriledigini, iki tedavi seklinin birbirine istatistiksel olarak ustunlugu olmadigini saptamislardir.
The study group included 391 people (58% of 671) who had two or more DEXA scans.
Quantitative computed tomography (QCT) or a lateral projection of the lumbar spine by DEXA reflecting more accurate results than posteroanterior lumbar DEXA in determining the bone mass in AS has been suggested (5, 26).
Portable bone densitometers are generally preferred for the purpose of mass-screening, where majorly devices preferred are DEXA or quantitative ultrasound units.
The DEXA scanning procedure is one of the most widely used methods to measure bone mineral density and detect the onset of osteoporosis by precisely documenting changes in bone marrow density (BMD) for both the spine and the rest of the body, a statement said.
Five of 10 patients with DEXA scans were osteopenic, not osteoporotic, suggesting that fragility fractures can occur in HIV-positive patients earlier than might be expected, Dr.
Reay found that DEXA scans were obtained in 38% of all patients on chronic glucocorticoid therapy.
MANCHESTER, England -- Synexus has significantly increased its capacity to recruit and run global osteoporosis trials by increasing the number of DEXA scanners at its hub sites by a third.
At the moment of DEXA measurements is approximately 3,000 examinations per year and the number is growing.