What is a DEXA scan?
Dual-Energy X-ray Absorptiometry (DEXA) is a medical imaging technique using low-power X-ray beams with different energy levels to measure bone mineral density and body composition.
A DEXA scan is essential for assessing:
Bone Mineral Density: Typically evaluates the hip and spine, as these areas are most susceptible to fractures due to osteoporosis. For each bone group, the scan provides both Z scores and T scores. Positive Z and T scores indicate above-average bone density, while negative scores suggest below-average density.
Z scores compare your bone density to the average for people of your age, sex, and ethnicity.
T scores compare your bone density to the average of a healthy young adult of the same sex.
Body Composition Analysis: Assesses the proportions of fat, muscle and bone.
Body Fat Percentage: The proportion of fat in the body.
Muscle Mass: The amount of lean tissue in the body.
Bone Density: The amount of mineral content in bone tissue.
Visceral Adipose Tissue (VAT) mass: Helps assess fat distribution, particularly the fat surrounding internal organs.
It gives you and your doctor a comprehensive understanding of your bone health and body composition, enabling your doctor to engage you in preventative lifestyle changes.
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