Bone Density Test

An example of the DEXA bone densitometry readout

A DEXA bone densitometry test is used to aid in the diagnosis of osteoporosis and other conditions that cause bone loss.

It is also a very useful tool for evaluating the effects that treatment has had on those conditions. Just as in a common x-ray, a bone density scan is a painless medical test that physicians use for the diagnosis and treatment of various conditions, such as osteoporosis. The test involves exposing the part of the body being examined to a small amount of ionizing radiation to form pictures of the body. Two beams are fired into the body, one measuring soft tissue and the other measuring bone. The difference between the two readings determines bone density.