DXA is a medical imaging technique used to measure bone mineral density; it is considered the gold standard for diagnosing osteoporosis and assessing fracture risk.
Mae DXA yn dechneg delweddu meddygol a ddefnyddir i fesur dwysedd mwynol esgyrn ac fe'i hystyrir y safon aur ar gyfer gwneud diagnosis o osteoporosis ac asesu risg o doresgyrn.