Should You Really Get That X-Ray or CT Scan? A front-page story in today's Washington Post might give you pause the next time a doctor offers to scan you to determine the source of a health complaint.

A computed tomography (CT) scan is a test your doctor might use to look for a problem inside your body, plan your surgery, or check how well a treatment is working for you. It uses powerful X-rays, a ...

Magnetic resonance imaging (MRI) is a technique using magnets, radio waves, and a computer that produces images of soft tissues in the body, like muscles and organs. Unlike some other imaging tests, ...