MRI, which stands for Magnetic Resonance Imaging, is a way to get pictures of various parts of your body without the use of x-rays. An MRI scanner consists of a large and very strong magnet (usually donut-shaped) in which a patient lies. A radio wave antenna is used to send signals to the body and then to receive signals back. The returning signals are then convented into pictures by a computer, which is attached to the scanner.
MRIs are used for a variety of reasons, but they are particularly good for looking at the brain, spinal cord, nerves, muscles, ligaments, tendons, and other “soft tissue” throughout the body.
To learn more about MRIs, how they’re performed, and how to prepare for one, we recommend reading “Magnetic Resonance Imaging” from the Atlanta Medical Center and watching “Video: MRI” from the Mayo Clinic.