[0] Bone scan [1] Looks at bone integrity. The test is rarely needed. [3] Abnormal findings show compression fractures, which can occur in weakened bones from certain conditions like osteoporosis. Bone tumors can also be imaged. [2] 
An injection of tracer material is given into your arm and allowed to be absorbed into the bones over a 2-4 hour time frame.Then, you will lie on a table with an arm-like device holding the camera, which passes back and forth above your body, scanning the skeleton over 60 minutes. Your body eliminates the tracer over the following 48 hours.