DEXA
DEXA
DEXA (Dual-Energy X-ray Absorptiometry), pronounced /ˈdɛksə/, is a medical imaging technique primarily used to measure bone mineral density (BMD). The term DEXA is derived from the words Dual, Energy, X-ray, and Absorptiometry.
Etymology
The term DEXA is an acronym for Dual-Energy X-ray Absorptiometry. Dual refers to the use of two X-ray energies, X-ray is a form of electromagnetic radiation, and Absorptiometry refers to the measurement of absorption levels.
Procedure
A DEXA scan involves a patient lying on a table while a small X-ray device scans specific parts of their body. It is a non-invasive procedure that is typically painless and requires minimal preparation. The scan provides detailed information about the patient's bone density, which can help diagnose conditions such as osteoporosis and assess the risk of fractures.
Related Terms
- Bone mineral density (BMD): A measure of the amount of minerals, specifically calcium, in the bones. A lower BMD can indicate osteoporosis and a higher risk of bone fractures.
- Osteoporosis: A condition characterized by weak and brittle bones, often resulting from a decrease in BMD. It is commonly diagnosed using a DEXA scan.
- Fracture risk assessment: An evaluation of a patient's likelihood of experiencing bone fractures, often assessed using a DEXA scan.
See Also
External links
- Medical encyclopedia article on DEXA
- Wikipedia's article - DEXA
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