What is DXA Scanning?
DXA Scanning (Dual-energy X-Ray Absorptionmetry) is a non-invasive imaging technique used primarily to assess bone mineral density (BMD) and body composition. It is considered the gold standard for diagnosing Osteoporosis and evaluating fracture risk but is also widely used to analyse body fat and lean mass.
How DXA Scanning Works:
- Dual X-Ray Technology: Two low-dose X-ray beams are passed through the body at different energy levels. The scanner measures the absorption of these beams by different tissue (bone, fat and muscle)
- Precise Results: The difference in absorption rates allow the scanner to generate highly accurate data on bone density and tissue composition
Application of DXA Scanning:
- Evaluates fracture risk, especially in older adults or postmenopausal women
- Detects Osteoporosis and Osteopenia
- Monitors bone density changes over time in response to treatments
- Measures total and regional fat mass, lean mass and bone mineral content
- Useful for athletes aiming to optimise performance and track changes in body composition
- Monitors health changes during weight loss, muscle gain or chronic illness management
- Tracks changes in body composition related to diseases such as Sarcopenia, Obesity or Cancer
- Assists in evaluating metabolic health and risks related to fat distribution (eg visceral fat levels)
Benefits of DXA Scanning:
- Accuracy: Provides detailed and precise measurements compared to other methods like BMI
- Safety: Uses minimal radiation, making it safe for repeated use when necessary
- Quick and Comfortable: The scan is typically completed in under 15 minutes, with no need to special preparation
DXA Scanning is widely used in medical facilities, sports clinics and wellness centres as a valuable tool for assessing and monitoring health.