DEXA and DXA scan are two terms that are often used interchangeably, but they actually have different meanings. DEXA stands for dual-energy X-ray absorptiometry, while DXA scan is simply a shorter way of saying DEXA scan.
What is DEXA?
DEXA is a type of X-ray scan that measures bone mineral density (BMD). BMD is a measure of the amount of mineral in bones. The more mineral in bones, the stronger they are. DEXA scans are used to diagnose osteoporosis, a condition that causes bones to become weak and brittle.
How is a DEXA Scan Performed?
A DEXA scan is a painless and non-invasive procedure. It typically takes about 10-15 minutes to complete. During the scan, you will lie on a table while the X-ray machine passes over your body. The X-ray machine will take two images of each bone being scanned. The images will then be analyzed by a computer to determine your BMD.
What are the Benefits of a DEXA Scan?
There are many benefits to getting a DEXA scan. These include:
- Early diagnosis of osteoporosis: DEXA scans can help diagnose osteoporosis early, when it is most treatable.
- Monitoring osteoporosis treatment: DEXA scans can be used to monitor the effectiveness of osteoporosis treatment.
- Identifying risk factors for osteoporosis: DEXA scans can help identify people who are at risk for osteoporosis, so they can take steps to prevent it.
Who Should Get a DEXA Scan?
The American College of Obstetricians and Gynecologists (ACOG) recommends that all women over the age of 65 get a DEXA scan. The National Osteoporosis Foundation (NOF) also recommends that women over the age of 50 get a DEXA scan if they have any risk factors for osteoporosis, such as a family history of osteoporosis, low body weight, or early menopause.
What are the Risks of a DEXA Scan?
The risks of a DEXA scan are very low. The amount of radiation exposure from a DEXA scan is very small. It is about the same as the amount of radiation exposure you would receive from a cross-country flight.
Conclusion
DEXA scans are an important tool for diagnosing and treating osteoporosis. If you are at risk for osteoporosis, talk to your doctor about whether a DEXA scan is right for you.
Additional Information
- National Osteoporosis Foundation: https://www.nof.org/
- American College of Obstetricians and Gynecologists: https://www.acog.org/