Monitoring bone health can play a significant role in maintaining well-being as we age. Bone density tends to decrease with time, particularly for adults over 50, potentially increasing the risk of fractures. Regular bone health monitoring with DEXA scans can help identify changes in bone mineral density over time.
What Is a DEXA Scan?
DEXA, or Dual-Energy X-Ray Absorptiometry, is an imaging test that measures bone mineral density (BMD). The process uses low levels of X-rays to determine the density of minerals—such as calcium—in bones. Unlike conventional X-rays, a DEXA scan focuses on assessing bone strength rather than overall bone structure. This test specifically evaluates regions like the hips, spine, and sometimes the forearm, which are prone to fractures.
What Does a DEXA Measure?
A DEXA provides two primary measurements:
- Bone Mineral Density (BMD): This indicates the quantity of minerals in a particular segment of bone. The results help estimate bone strength and the likelihood of fractures.
- T-Score and Z-Score: These are standardized results provided by the scans. The T-score compares your bone density to that of a young adult with peak bone mass, while the Z-score compares your bone density to individuals of your age, gender, and size.
The Role of Scans in Bone Health Monitoring
For adults over 50, particularly postmenopausal women, reduced bone density can occur naturally, leading to conditions like osteoporosis. DEXA scans offer a precise way to track bone changes, providing valuable data for healthcare providers. Monitoring BMD levels can be beneficial for individuals with risk factors such as low body weight, previous fractures, or conditions that affect bone metabolism. Researchers and healthcare providers also rely on scans to evaluate the effectiveness of treatments designed to improve or maintain bone density.
When Should You Get a Scan?
Doctors may recommend a DEXA scan based on several factors. Women over the age of 65 and men over 70 may be advised to undergo this scan as part of routine health monitoring. For individuals with elevated risk factors, such as a family history of osteoporosis, prolonged use of medications, or specific medical conditions, scans may be suggested earlier. Those who have sustained fractures after minimal impact may also benefit from one to assess bone density levels.
What Happens During a DEXA Scan?
Scans are quick, non-invasive, and typically completed within 10 to 30 minutes. The process involves lying down on a flat, padded table while a scanning device moves over your body. The scanner emits a small dose of X-rays, which penetrate the bones to measure their density. Two energy peaks are used to differentiate between bone and soft tissue. This data is then used to calculate your BMD accurately.
Take Action on Bone Health Today
Understanding your bone health is a key step in managing your overall well-being. A DEXA scan can provide measurable insight into your bone density, helping you and your healthcare provider make informed choices about your health. If you are considering ways to support your bone health or interested in learning more, reach out to your service provider.
Leave a Reply