Definition: MRI, or Magnetic Resonance Imaging is a diagnostic tool that creates cross-sectional images of areas inside the body. MRIs allow the doctor to see muscles, nerves, the spinal cord, and organs. An MRI can show herniated disks, tumors, and problems with soft tissue.
MRI - Magnetic Resonance Imaging
By Anne Asher, About.com
Updated May 25, 2005
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
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