Magnetic Resonance Imaging (MRI) is a safe, painless way for doctors to get a clear look at your internal anatomy. In fact, a scan may be the only way your doctor can get diagnostic information without surgery. The technology produces sharp computerized images of internal body tissues that cannot be viewed through x-rays. Doctors can request an MRI image for your brain, your knee, your spine, or just about any part of your body that needs diagnosis.