St. Joseph Hospital of Orange
1100 West Stewart Dr, Orange, CA 92868714.633.9111
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Radiology & Imaging Services

What is an MRI Scan?

Magnetic Resonance Imaging (MRI) is a noninvasive, usually painless medical test that helps physicians diagnose and treat medical conditions.

MRI uses a powerful magnetic field, radio waves and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures. The images can then be examined on a computer monitor or printed. MRI does not use ionizing radiation (x-rays).

Detailed MR images allow physicians to better evaluate parts of the body and certain diseases that may not be assessed adequately with other imaging methods such as X-ray, Ultrasound or Computed Tomography.