DEXA Scan for Bone Mineral Density (BMD)

What is a DEXA Scan?

A DEXA scan, also known as dual-energy X-ray absorptiometry, is a non-invasive medical test that measures bone mineral density (BMD). It uses low-dose X-rays to assess the strength and density of your bones.

Why is BMD Important?

Bone mineral density is a crucial factor in bone health. Low BMD can increase your risk of osteoporosis, a condition that weakens bones and makes them more prone to fractures.

Who Should Consider a DEXA Scan?

Postmenopausal women: Women are at higher risk of osteoporosis after menopause due to hormonal changes.

Men aged 65 and older: Men also experience bone loss with age, although at a slower rate than women.

Individuals with risk factors for osteoporosis:

> Family history of osteoporosis

> History of fractures

> Certain medical conditions (e.g., rheumatoid arthritis, hyperthyroidism)

> Long-term use of certain medications (e.g., corticosteroids)

> Low body weight or eating disorders

> Smoking or excessive alcohol consumption

How Does a DEXA Scan Work?

During the procedure, you will lie on a table while a scanning device passes over your body. The device emits low-dose X-rays to measure bone density in specific areas, typically the spine and hip.

What to Expect During a DEXA Scan:

> The procedure is quick and painless, usually taking about 15-20 minutes.

> You will be asked to lie still during the scan.

> You may be asked to remove any metal jewelry or clothing that could interfere with the scan.

What Do the Results Mean?

Your doctor will review your results and interpret them based on your age, gender, and other factors. The results will be compared to a standard value to determine your bone density and fracture risk.

Normal: Your bone density is within the healthy range.

Osteopenia: Your bone density is lower than normal, but not low enough to be classified as osteoporosis.

Osteoporosis: Your bone density is significantly lower than normal, increasing your risk of fractures.