peripheral dual-energy X-ray absorptiometry

(redirected from P-DEXA)

peripheral dual-energy X-ray absorptiometry

A type of dual-energy X-ray absorptiometry (DEXA) that measures the density of bones in the arms or legs, such as the wrist.

Pros
P-DEXA machines are portable and can be used in a doctor's office, produce very low doses of radiation and provide a faster diagnostic turnaround than standard DEXA measurements.

Cons
P-DEXA does not measure the density of the bones most likely to break (e.g., hip and spine); it is less effective than DEXA in monitoring the effects of therapy.