DXA Scans (Bone Density Scans)
Dual X-ray absorptiometry (DXA) is the predominant method for measuring bone mineral density (BMD), which helps doctors diagnose and treat osteoporosis and other bone diseases. During a DXA Scan, two X-ray beams are used; one beam is high energy, while the other is low energy. The amount of X-rays that pass through the bone is measured for each beam and, based on the difference between the two beams, your bone density can be measured. The amount of radiation exposure during a DXA Scan is low—typically less than you would be exposed to in the environment during a normal day.