What is a bone densitometry scan?
A bone densitometry scan is a special type of X-ray test used to measure the calcium content of the bone, usually in the lumbar region (the lower back) and the hips. The examination is also called a DEXA-scan, QDR-scan or BMD (bone mineral density) measurement.

How does a bone densitometry scan differ from an X-ray?
A bone densitometry scan measures the calcium content in the bones, which cannot be evaluated in an ordinary X-ray. Although an X-ray may appear to show that the bones have a low calcium content, the information is unreliable, so someone with osteoporosis may have perfectly normal X-rays. An X-ray is far more reliable when it comes to detecting a recent bone fracture.

What is a bone densitometry scan used for?
A scan can help your doctor assess their risk of having a bone fracture within the next few years. In general, people with a bone mineral density significantly lower than that normal for their age and sex are more likely to break a bone. If the patient then receives medical treatment, the scan can be repeated after two years to assess their progress.

How is a bone densitometry scan carried out?
The scan will take between 10 and 30 minutes, depending on the equipment used and the parts of the body examined.

If the doctor is checking for osteoporosis, the lumbar spine and the hips are usually examined, as well as the forearm as it will give a different calcium content from other body parts. Patients can eat immediately before the test and remain fully dressed as long as their clothes have no metal buttons or zippers.

What if I still have questions about my densitometry scan?
Please feel free to discuss all of your questions with any of the doctors at your regular scheduled appointments. You may also contact us for more information.