Dual Energy X-ray Absorptiometry Scan (DEXA or DXA Scan) is an advanced, highly accurate imaging technique for measuring total body composition. It uses X-ray beams at two different energy levels. Your muscles, fat, and bone all absorb the rays differently, allowing for a detailed and accurate image of your whole body and the breakdown of its compositions. The amount of radiation used for a DEXA scan is very low, lower than the background radiation you receive in a day. In general the scan can take anywhere from six to twelve minutes depending on body habitus. A detailed report is then created outlining the patient’s body composition.