Dual-Energy X-ray Absorptiometry

Definition

Dual-Energy X-ray Absorptiometry, often abbreviated as DXA or DEXA, is a medical imaging technique used to measure bone density and body composition, including body fat percentage.

Scientific / Technical Definition

Dual-Energy X-ray Absorptiometry (DXA) is a sophisticated imaging technology that assesses body composition by emitting two low-dose X-ray beams at different energy levels. It allows for precise measurements of bone mineral density (BMD), fat mass, and lean body mass by distinguishing between bone, lean tissue, and adipose tissue.

Benefits

• Accurately measures body fat percentage and assesses body composition.
• Helps diagnose osteoporosis by evaluating bone mineral density.
• Assists in tracking changes in body composition over time, particularly useful for athletes and individuals undergoing weight management programs.

Examples

• Body fat analysis for fitness assessments.
• Bone density tests for osteoporosis screening.
• Tracking body composition changes in clinical research or weight loss programs.

Additional Information

• effects: DXA provides detailed insights into body composition, aiding in personalized health and fitness plans. It is non-invasive and widely considered safe due to its low radiation exposure.

Related Terms

• Body Mass Index
• Bioelectrical Impedance Analysis
• Computed Tomography Scan
• Magnetic Resonance Imaging
• Bone Mineral Density

References

• Understanding DXA Scans and Their Clinical Applications
• Body Composition Analysis Techniques and Reference Standards