What is the purpose of DXA in osteoporosis evaluation?

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Multiple Choice

What is the purpose of DXA in osteoporosis evaluation?

Explanation:
DXA is used to measure bone mineral density, which is the key test for diagnosing osteoporosis and assessing fracture risk over time. It provides T-scores (compared with young healthy adults) and Z-scores (age-matched), guiding treatment decisions and monitoring response. It does not measure vitamin D status—that requires a blood test for 25-hydroxyvitamin D. It also does not assess bone marrow density, and it isn’t used to evaluate fracture healing, which is tracked with follow-up imaging and clinical recovery rather than a bone density scan.

DXA is used to measure bone mineral density, which is the key test for diagnosing osteoporosis and assessing fracture risk over time. It provides T-scores (compared with young healthy adults) and Z-scores (age-matched), guiding treatment decisions and monitoring response. It does not measure vitamin D status—that requires a blood test for 25-hydroxyvitamin D. It also does not assess bone marrow density, and it isn’t used to evaluate fracture healing, which is tracked with follow-up imaging and clinical recovery rather than a bone density scan.

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