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Diagnosing Osteoporosis:
What is bone densitometry Bone densitometry, using an advanced
technology called DXA (Dual-energy X-ray Absorption), is a procedure that
accurately and painlessly measures bone density and the mineral content
of bone. This helps in determining a woman's risk of developing osteoporosis.
How does the bone densitometry work Most common examination sites are
the fracture-prone hip, spine and sometimes the forearm. Evaluation
also includes measurement of height and weight, a thorough history and
risk assessment. Bone Mineral Density (BMD) is calculated and compared
to normal BMD values, matched for age and sex to confirm or rule out osteoporosis.
A low BMD by DXA may predict the likelihood of developing osteoporosis
and can help determine a treatment plan.
How is it performed During a comprehensive bone evaluation
with DXA, the patient lies comfortably still on a padded table while the
DXA unit scans one or more areas, usually the fracture-prone spine or the
hip. Unlike typical x-ray machines, radiation exposure during bone
densitometry is extremely low - less than the radiation exposure during
a coast-to-coast airline flight. The entire process takes only minutes
to complete, depending on the number of sites scanned. It involves
no injections or invasive procedures, and the patient remains fully clothed.
Is any special preparation
required before taking the test
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