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Bone Density
What is a bone density exam?
A bone density exam, also known as a bone densitometry or a DEXA scan, is a test that measures the density and strength of the bones. The test uses X-rays to measure the amount of mineral in the bone, which is an indicator of bone strength. Bone density tests are most commonly used to diagnose and monitor osteoporosis, a condition that causes bones to become weak and brittle, but can also be used to determine risk for fractures or monitor the effects of treatment for bone loss.
Book an AppointmentWhat to expect during an Bone Density Scan?
A bone density scan is typically a quick and painless procedure. Here's an overview of what you can expect during a scan:
- You will be asked to lie down on a table, and the technician will position you so that the area of your body being examined is in the proper location for the scan.
- The technician will then position the scanner's detector above the area being examined. The detector emits a small amount of X-ray radiation and measures the amount of radiation that is absorbed by the bones.
- During the scan, you will need to lie still and hold your breath for a few seconds while the machine takes the measurement.
- The procedure typically takes only a few minutes, and you will be able to go back to your normal activities immediately afterwards.
- The results of the scan will be interpreted by a radiologist or your doctor and will be used to determine if your bone density is normal or if you have osteoporosis or other bone disorders. They may also recommend further testing or treatment.
It's generally recommended not to wear jewelry or clothes with metal zippers or snaps on the day of the exam.
How to prepare for a bone density exam?
Here are some steps you can take to prepare for a bone density exam:
Wear comfortable clothing: Wear clothing that is easy to change into and out of, since you may need to undress to the waist for a scan of the spine or hip. Avoid wearing clothes with metal zippers or snaps, as they may interfere with the scan.
Inform your doctor of any medications you are taking: Be sure to let your doctor know if you are taking any medications, such as calcium supplements or hormone therapy, as these can affect your test results.
Inform your doctor of any health conditions: Let your doctor know if you have any health conditions, such as kidney disease or sarcoidosis, that could affect your test results.
Arrange for transportation if you are having a sedative : if your doctor has prescribed sedation for you, it is essential to have someone with you to drive you home afterwards, because you will not be able to drive for several hours after the procedure.
Do not take any Calcium supplement or Vitamin D for 24 hours prior to the scan.
In general, it is best to schedule your bone density test for the first week after your menstrual period, as hormone levels can affect the test results.
By following these steps and consulting with your doctor, you can help ensure that your bone density exam is as accurate and informative as possible.
What are of the body does a bone density exam screen?
Spine: the spine is a common site for osteoporosis-related fractures. A scan of the spine will typically measure the density of the vertebral bodies, which are the large bones that make up the spine.
Hip: The hip bone is also a common site for osteoporosis-related fractures. A scan of the hip will typically measure the density of the femoral neck and the total hip.
Forearm: Some bone density exams also include a measurement of the bone density in the forearm. The bones in the forearm are less commonly affected by osteoporosis, but are an easy accessible site for measurement, measuring the density of the radius, which is one of the two bones in the forearm.
A bone density exam, also known as a DEXA scan, typically measures the density of the bones in the spine, hip, and sometimes the forearm. These are the most common sites for osteoporosis and other bone disorders, and the bones in these areas are more likely to be affected by the disease.
A bone density scan is a noninvasive and painless procedure, it is generally considered safe and only involves minimal radiation exposure. It's useful tool in identifying and monitoring bone loss, and can help your doctor determine if you are at risk for fractures and if further testing or treatment is needed.