What is a Dexa Scan (Bone Density)?
A Dexa scan (bone density) is a simple test. It measures how strong your bones are. Doctors use it to check for weak bones, also called osteoporosis. The scan uses low-dose X-rays to look at your bones. Usually, it checks your hip and spine. Because the test is quick and painless, many people find it easy to do. Dexa scan for bone density is the most common way to check bone health.
Why is a Dexa Scan Done? (Purpose and Benefits)
Doctors order a Dexa scan for several reasons. First, it helps find out if your bones are getting weaker. Second, it can show if you have osteoporosis or are at risk for it. Third, it helps track changes in your bone strength over time. This is important if you are taking medicine for bone loss. Also, the scan can help your doctor decide if you need treatment. Because early detection is key, a Dexa scan can help prevent broken bones.
Who Should Get a Dexa Scan?
Not everyone needs a bone density test. However, some people have a higher risk for weak bones. If you are a woman over 65 or a man over 70, you should consider a Dexa scan. People with certain health problems may also need this test. For example, if you have broken a bone after age 50, you may need a scan. Some medicines can weaken bones, so your doctor may suggest a scan if you take them. In addition, people with a family history of osteoporosis should ask about testing.
How to Prepare for a Dexa Scan
Preparing for a Dexa scan is easy. Most people do not need to do much. Still, there are a few things to remember. First, wear loose, comfortable clothes without metal zippers or buttons. Metal can affect the scan results. Second, avoid taking calcium supplements for at least 24 hours before the test. If you have had a barium test or a CT scan with contrast recently, tell your doctor. Sometimes, you may need to wait before having a Dexa scan.
What to Expect During the Procedure
The Dexa scan procedure is quick and simple. When you arrive, a staff member will guide you to the exam room. You will lie on a padded table. The scanner will move over your hip and spine. You do not need to change positions often. The test usually takes about 10 to 20 minutes. Because the scan uses very little radiation, it is safe for most people. You will not feel any pain during the test. After the scan, you can return to your normal activities right away.
Understanding Dexa Scan Results
After your Dexa scan, your doctor will review the results. The scan gives you a T-score and a Z-score. The T-score compares your bone strength to that of a healthy young adult. The Z-score compares your bones to others your age and sex. A T-score above -1 is normal. A score between -1 and -2.5 means you have low bone mass. A score below -2.5 suggests osteoporosis. Your doctor will explain what your results mean for you. Based on the results, you may need treatment or lifestyle changes.
Risks and Safety of Dexa Scans
Dexa scans are very safe. The amount of radiation used is much lower than a chest X-ray. Most people have no side effects. However, if you are pregnant, tell your doctor before the scan. Although the risk is low, it is best to avoid any radiation during pregnancy. According to the CDC, Dexa scans are safe for regular use when needed.
Tips for Maintaining Healthy Bones (Lifestyle Guidance)
Keeping your bones healthy is important at any age. Even if your Dexa scan shows strong bones, you can take steps to protect them. Here are some tips:
Frequently Asked Questions (FAQs)
Conclusion
In summary, a Dexa scan (bone density) is a safe and easy way to check your bone health. Early testing can help prevent fractures and guide treatment. If you have concerns about your bones, consult a healthcare provider at Aruna Clinical Laboratory & X-Rays for personalized advice about bone health and Dexa scans.