Dear Reader,

Bone density measurements, which are used by health care professionals to evaluate an individual's risk for fracture or osteoporosis, are generally taken in one of two ways. The most accurate gauge of bone density is the DEXA (dual energy X-ray absorptiometry) scan that uses two different low-dose X-rays to determine the density of bone in the spine and the hip. The test exposes the patient to significantly less radiation than a standard X-ray and can discern as little as a 1 percent loss of bone density.

Ultrasound can also be used to measure bone density. Sound waves are transmitted through bone (usually at the heel, shin, or knee). The time it takes the sound to pass through the bone is measured (the longer the time, the denser bone) and used to calculate overall bone density. Both tests are painless and can be done in minutes.

Alice