For women over 50, it is important to get a Bone Density Scan. Bone density scanning is an enhanced form of x-ray technology. Bone density is often measured to detect or monitor osteoporosis or other medical conditions found in the bones. The scan is also known as dual-energy x-ray absorptiometry (DEXA), or bone densitometry, and is most often performed in the lower spine and hips. It is the established measuring standard for bone mineral density (BMD). In some adults and most children, the whole body is scanned. DEXA uses very low radiation amounts.