What is an MRI?

MRI Scans

Magnetic resonance imaging (MRI) may represent the most significant advancement in medical image since the discovery of x-rays. The MRI image is created through an interaction between static, radiofrequency, and gradient magnetic fields. It provides a way to look inside the body by producing clear anatomical images displayed in any plane, without radiation to the patient, and with a tissue discrimination unrivaled by any other imaging modality.

MRI has much greater soft tissue imaging contrast than computed tomography (CT or Cat Scan) making it especially useful in neurological (brain), musculoskeletal, cardiovascular and oncological (cancer) imaging.

MRI vs. X-RAY vs. CT

What is an MRI?

MRI

  • Uses magnetism and radiofrequency waves to generate pictures.
  • Nearly all body structures can be visualized with MRI.
  • It does not use x-ray or ionizing radiation.
What is an X-Ray?

X-Ray

  • Involves exposing a part of the body to a small dose of ionizing radiation.
  • Show abnormalities in boney structures and in the abdomen
  • Ionizing radiation can be cumulatively harmful
What is a CT Scan?

CT/CAT

  • Combines special x-ray equipment with computers to produce multiple pictures of the inside of the body.
  • Can scan internal organs, bone, soft tissue and blood vessels.
  • Provides greater clarity and reveal more details than regular x-ray exams.