What is Bone Densitometry (DEXA)?
DEXA stands for Dual Energy X-ray Absorptiometry.
A DEXA scan produces an intense narrow beam of radiation that
quickly and precisely measures bone density. This test is the
best technique available
to diagnose osteoporosis, a
disease which causes bones to fracture easily and affects
over 25 million Americans – mostly women, and measures
the amount of bone loss - the health of your bones.
While the bone loss that results from osteoporosis
is irreversible, osteoporosis can be effectively
managed once the condition is
measured. By performing a simple, safe and
painless X-ray procedure, we can help your doctor
determine whether treatment is necessary.
A DEXA scan is a safe, non invasive exam. The technologist
will position you on the exam table to measure the bone
density of the hip, spine, or forearm. The
computer will calculate
your score and from this information the radiologist
can diagnose whether your bones are showing signs
of osteoporosis.
It is recommended that patients have a base line scan at 45-50 years
of age. All follow up scans can be compared to the first scan to monitor
the changes of the bone density.

How Bone Densitometry Works:
The Equipment:
The Hologic Acclaim Series QDR 4500 Elite allows
for a convenient and precise way to measure bone density to evaluate
bone mass and monitor response
to therapy.
Bone Density
Scan:
Most common examination sites are the hip, spine and sometimes the forearm.
Evaluation also includes measurement of height and weight, a thorough
medical history, and risk assessment.
Data Analysis:
Bone Mineral Density (BMD) is calculated and compared to normal BMD values,
matched for age and sex, to confirm or exclude low bone mass. A low BMD or
DXA may help determine a treatment plan.
The Report:
A report will be sent to your doctor that consists of your bone density measurements,
a comparison of your results against an extensive database of young,
normal bone density values, a comparison of your results against a database
of other
patients your age and sex, and recommendations for treatment or prevention.
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