The magnetic resonance imaging (MRI) scanner creates images that represent slices through the body without using X-ray. MRI uses a powerful, but safe, magnetic field and radio waves like those that transmit FM radio stations.
The combination of the magnetic field and radio waves is used to create images of body structures, including the brain, spine, joints, abdominal and pelvic organs, and blood vessels. MRI scans are used to diagnose tumors, strokes, back problems, joint problems, diseases of arteries and many other disorders and abnormalities. The images produced may demonstrate conditions that do not show up on X-ray exams. The results may help determine your diagnosis and/or the best course of treatment.