DEXA scan stands for Dual Energy X-ray Absorptiometry, and the purpose of a DEXA scan is to measure bone loss.
A bone scan is the only way to diagnose osteoporosis before a broken bone happens. A bone density test, or DEXA scan, may be done on your hip or spine to estimate your bone density and determine if treatment is necessary.
Bone density scans evaluate the health and strength of your bones. Typically, results are reported as a “T score,” which would be the bone density of a younger woman, or a “Z score”, which means your bone density is comparable to people of the same age. A number is then associated with the score. The more negative the number, the greater the bone loss.