DEXA or Bone Densitometry
Dexa is used to measure bone mineral density. The most
common cause for loss of bone density is osteoporosis.
A thin beam of x-ray energy is passed through the lower
spine and hip regions. A computer calculates how much of
x-ray energy is absorbed by the bones and compares the
results with what in a younger person (eg 20 years old),
and also with what expected for a person of your age, sex
and race.
The procedure takes approximately 15 to 20 minutes. Low
doses of ionising radiation are used.
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FAQ
Q: Can you explain what Bone Density
means?
A: Bone Density is a specialised
x-ray used to detect the possible presence of osteoporosis
or its onset.
A DEXA is extremely accurate and is designed to measure the lower spine and
hip regions, as these are most prone to fractures.
Q: What happens during the examination?
A: You will be requested to lie
still on the x-ray table, with your knees bent over a
cushion. Measurements will then be taken of your lower
spine area. The procedure will last for approximately
20 minutes.
Q: Is there any preparation?
A: Try to wear loose fitting clothing
without belts. You may be asked to wear a gown. This
procedure does not involve any type of injection.
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