A DEXA scan (Dual-Energy X-ray Absorptiometry) is the most commonly used test for diagnosing osteoporosis, a condition where bones become weak and more prone to fractures. This test is an X-ray scan that helps measure the amount of bone mineral density (BMD) throughout your body. In general, the denser the bones, the stronger they are, and bone mass can predict the likelihood or risk of fractures.
DEXA Scan Basics
- Evaluates Bone Mineral Density (BMD): The primary purpose of a DEXA scan is to measure the bone mineral density of the spine and hip, which are key areas for determining bone health.
- Fracture Risk Prediction: The results of a DEXA scan can predict the likelihood of bone fractures, providing vital information about bone strength.
- Comparison with Age and Gender Groups: Your bone density is compared with that of young premenopausal women and other women in your age group to assess bone health.
- Radiation Measurement: The DEXA scan calculates bone density based on the amount of radiation absorbed by the bone, which is minimal and well within safe limits.
What to Expect During a DEXA Scan
When undergoing a DEXA scan, there are several things to keep in mind:
- The scan is typically performed in hospital radiology departments, free-standing radiology facilities, or doctors' offices.
- You do not need to undress, except to remove any metal objects from the area being scanned (such as jewelry or clothing with zippers).
- You will lie down on a special table for several minutes while the scan monitor moves over your body.
- The procedure is painless and takes approximately 20 minutes to complete.
- There is no enclosed space during the scan, making it comfortable and non-intrusive.
Radiation Exposure in a DEXA Scan
One of the key benefits of the DEXA scan is that it involves very low levels of radiation. In fact, the radiation dose from a DEXA scan is lower than that of a chest X-ray. It's often compared to the extra radiation exposure you'd receive if you lived at high altitudes for a short time. This makes it a safe and effective test for evaluating bone health.
If you are concerned about osteoporosis or have risk factors, a DEXA scan can provide crucial information to help guide your treatment and prevention strategies. Contact us today to see if this test is right for you.
