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Understanding Bone Densitometry
Bone Densitometry is a non-invasive procedure in which a patient's
bone mineral density is measured. A very low energy x-ray beam is used
to produce a scan of the lumbar spine, hip or forearm. Doctors use the
information gathered from this study to assess bone condition, risk
of fracture, and to assist in diagnosis for treatment.
A bone density scan measures the total density of bone in a person.
The lower the density of a bone the higher the risk of fractures. A
bone scan, along with a patient's medical history, is a useful aid in
evaluating the probability of a fracture and whether any preventative
treatment is needed. A bone density scan has the advantage of being
painless while giving patients crucial information regarding their health.
Why Bone Densitometry?
Approximately one-half of all women over the age of 50 develop
osteoporosis. Osteoporosis places people at increased risk of bone fracture.
Bone densitometry is a safe and accurate method of assessing the health
of bone and risk of osteoporosis.
Risk factors that suggest the need for bone densitometry include:
- Kidney or thyroid disease
- Menopause
- Height or known compression fractures of the spine
- Diabetes
- Long term use of steroids such as cortisone for arthritis
- Cancer therapy drugs
- Family history of osteoporosis
- Alcohol and tobacco usage
How is the exam performed?
During the exam, the patient will lie comfortably on a well-padded
scan table. An x-ray tube slowly moves over the area being scanned.
The patient may breathe regularly, but talking is discouraged while
the machine is in motion.
Preparation
Bone densitometry may not be performed within one week of
any Nuclear Medicine studies or any studies using contrast, such as
Upper GI or Barium Enema. If the patient is taking calcium supplements,
they should not be taken the day of the exam. Comfortable clothing should
be worn such as two-piece sweat suits or soft cotton clothing. Metal
objects such as belt buckles, snaps, zippers, and buttons will interfere
with the scan and must be removed.
Results of Your Test
A Midtown Board Certified Radiologist specializing in Bone
Densitometry interpretation will report the results of this test by
telephone, fax, or mail to the referring physician promptly.
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