Although bone scans are useful in detecting abnormalities, they are less useful in diagnosing precise causes of the abnormality. Other diagnostic tests may be performed to identify conditions and diseases causing the unusual activity. For instance, if cancer is suspected, small amounts of bone tissue may be removed in a biopsy to confirm the diagnosis. The test results must be correlated with other information such as the patient’s clinical history and physical exam.

Other tests that may be performed along with a bone scan include:

• X-ray. Image of a body part, organ or system on film or fluorescent screens. It is produced by low doses of radiation.
  
  
• CAT scan (computed axial tomography). Test that allows for multiple x–rays to be taken from different angles around the patient. It creates images of organs and bones within the body. It may be performed alone or with the use of an injected dye (contrast medium).
  
  
• MRI (magnetic resonance imaging). Safe and noninvasive or minimally invasive imaging test that can help physicians diagnose diseases of numerous organs and vessels. It uses powerful magnets to produce images on a computer screen and film. As with a CAT scan, a contrast medium may be injected.