Back مقياس امتصاص الأشعة السينية ثنائي البواعث Arabic Dvoenergetska rendgenska apsorpciometrija BS پێوەری دوانەیی ئێسک لە ڕێگای ھەڵمژینی تیشک CKB Amsugnofesureg pelydr X egni deuol Welsh DXA-skanning Danish Dual-Röntgen-Absorptiometrie German Densitometría osea Spanish سنجش تراکم استخوان Persian Absorption biphotonique à rayons X French בדיקת צפיפות עצם HE
| Dual-energy X-ray absorptiometry | |
|---|---|
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| OPS-301 code | 3-900 |
Dual-energy X-ray absorptiometry (DXA, or DEXA[1]) is a means of measuring bone mineral density (BMD) using spectral imaging. Two X-ray beams, with different energy levels, are aimed at the patient's bones. When soft tissue absorption is subtracted out, the bone mineral density (BMD) can be determined from the absorption of each beam by bone. Dual-energy X-ray absorptiometry is the most widely used and most thoroughly studied bone density measurement technology.
The DXA scan is typically used to diagnose and follow osteoporosis, as contrasted to the nuclear bone scan, which is sensitive to certain metabolic diseases of bones in which bones are attempting to heal from infections, fractures, or tumors. It is also sometimes used to assess body composition.
- ^ "Bone mineral density test". U.S. National Library of Medicine.