X-ray: High-energy radiation with waves shorter than those of visible light. X-ray is used in low doses to make images that help to diagnose diseases and in high doses to treat cancer. From Healthy Resources Who Gets Multiple Myeloma?When Joining a Clinical Trial Makes SenseStaying Informed on Costs and Penalties Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors