A medical imaging technique that uses strong magnetic fields and radio waves to produce detailed images of structures inside the body.
MRI can produce high-resolution images of soft tissues such as the brain, spinal cord, muscles, ligaments, joints, and many internal organs. Unlike X-rays and CT scans, MRI does not use ionizing radiation.
Some MRI examinations use a contrast agent to make particular tissues or abnormalities easier to distinguish.
QUICK FACT
MRI uses a powerful magnetic field, so certain metal objects and implanted medical devices require special safety assessment before scanning.
COMMONLY CONFUSED WITH
CT Scan: CT uses X-rays and is generally faster; MRI uses magnetic fields and radio waves and often provides greater soft-tissue detail.
SEE ALSO