Final answer:
DEXA (Dual-energy X-ray absorptiometry) is used to measure bone density and mineral content, specifically for diagnosing conditions like osteoporosis.
Step-by-step explanation:
Dual-energy X-ray absorptiometry (DEXA or DXA) is used to measure bone density and bone mineral content. It works by directing two low-dose X-ray beams through the body and measuring the amount of energy absorbed by the bones. By comparing the amount of energy absorbed, DEXA can accurately determine bone density and mineral content, which is important in diagnosing conditions like osteoporosis.