During a bone scan, your entire skeleton is scanned to help identify a variety of bone disorders or find bone injuries, fractures or other damage that regular X-rays don't show. A bone scan also tracks the spread of cancer by creating radioactive “hot spots” in your bones. An insignificant dose of radioactive material called a "tracer" is injected to seek out injury and damage in your bones. There's no need to worry. Even though radiation is involved, a bone scan has no greater risk than a typical X-ray.