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Dual-energy X-ray absorptiometry (DXA, or DEXA [1]) is a means of measuring bone mineral density (BMD) with spectral imaging. Two X-ray beams, with different energy levels, are aimed at the patient's bones. When soft tissue absorption is subtracted, the bone mineral density (BMD) can be determined from the absorption of each beam by bone. Dual ...
A scanner used to measure bone density using dual energy X-ray absorptiometry. Bone density, or bone mineral density, is the amount of bone mineral in bone tissue.The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to optical density per square centimetre of bone surface upon imaging. [1]
DEXA: Dual energy X-ray absorptiometry: DH: developmental history Department of Health (United Kingdom), a branch of government DHE: dihydroergotamine: DHEA-S:
The standard in bone mineral density scanning developed in the 1980s is called Dual X-ray Absorptiometry, known as DXA. The DXA technique uses two different x-ray energy levels to estimate bone density. DXA scans assume a constant relationship between the amounts of lean soft tissue and adipose tissue.
A wide variety of body composition measurement methods exist. The gold standard measurement technique for the 4-compartment model consists of a weight measurement, body density measurement using hydrostatic weighing or air displacement plethysmography, total body water calculation using isotope dilution analysis, and mineral content measurement by dual-energy X-ray absorptiometry (DEXA). [1]
The results suggest that bone loss could be an effect of levothyroxine use in older adults, even when used at the appropriate dosage, which could be a concern in terms of osteoporosis risk. Is ...
The U.S. Preventive Services Task Force say vitamin D supplements do not reduce the risk of falls or bone fractures in healthy older adults. The draft recommendation notes vitamin D can be helpful ...
Osteoporosis: O&P: ova and parasites: OPAT Outpatient parenteral antibiotic therapy: OPD: outpatient department: OPPT: oriented to person, place, and time OPV: outpatient visit OR: operating room (aka operating theatre) odds ratio ORIF: open reduction internal fixation: ORSA: oxacillin-resistant staphylococcus aureus ORT: oral rehydration ...