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  2. Dual-energy X-ray absorptiometry - Wikipedia

    en.wikipedia.org/wiki/Dual-energy_X-ray...

    A normal T score is -1.0 and above, low bone density is between -1.0 and -2.5, and osteoporosis is -2.5 and lower. A Z score is just a comparison of what a patient's bone mineral density is in comparison to the average bone mineral density of a male or female of their age and weight. The WHO committee did not have enough data to create ...

  3. Quantitative computed tomography - Wikipedia

    en.wikipedia.org/wiki/Quantitative_computed...

    At the hip, a DXA-equivalent T-score may be calculated for comparison to the WHO classification at the proximal femur as normal, osteopenia (T-Score < -1.0 and > -2.5) or osteoporosis (T-Score < -2.5). [17] This T-Score may also be used for fracture risk probability calculation in the WHO FRAX tool [18] with "T-Score" as the appropriate DXA ...

  4. Bone density - Wikipedia

    en.wikipedia.org/wiki/Bone_density

    A scanner used to measure bone density using dual energy X-ray absorptiometry. Bone density, or bone mineral density, is the amount of bone mineral in bone tissue.The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to optical density per square centimetre of bone surface upon imaging. [1]

  5. Dual X-ray absorptiometry and laser - Wikipedia

    en.wikipedia.org/wiki/Dual_X-ray_absorptiometry...

    The standard in bone mineral density scanning developed in the 1980s is called Dual X-ray Absorptiometry, known as DXA. The DXA technique uses two different x-ray energy levels to estimate bone density. DXA scans assume a constant relationship between the amounts of lean soft tissue and adipose tissue.

  6. Osteoporosis - Wikipedia

    en.wikipedia.org/wiki/Osteoporosis

    Dual-energy X-ray absorptiometry (DEXA scan) is considered the gold standard for the diagnosis of osteoporosis. Osteoporosis is diagnosed when the bone mineral density is less than or equal to 2.5 standard deviations below that of a young (30–40-year-old [4]:58), healthy adult women reference population. This is translated as a T-score. But ...

  7. Osteopenia - Wikipedia

    en.wikipedia.org/wiki/Osteopenia

    Information from the DXA scanner creates a bone mineral density T-score by comparing a patient's density to the bone density of a healthy young person. Bone density between 1 and 2.5 standard deviations below the reference, or a T-score between −1.0 and −2.5, indicates osteopenia (a T-score smaller than or equal to −2.5 indicates ...