MedicalTerminology DB
Tests, Imaging & Diagnosis

nuclear magnetic resonance imaging

Meaning of nuclear magnetic resonance imaging: A procedure in which radio waves and a powerful magnet linked to a computer are used to create detailed pictures of areas inside the body.

Definition of nuclear magnetic resonance imaging

A procedure in which radio waves and a powerful magnet linked to a computer are used to create detailed pictures of areas inside the body. These pictures can show the difference between normal and diseased tissue. Nuclear magnetic resonance imaging makes better images of organs and soft tissue than other scanning techniques, such as computed tomography (CT) or x-ray. Nuclear magnetic resonance imaging is especially useful for imaging the brain, the spine, the soft tissue of joints, and the inside of bones. Also called magnetic resonance imaging, MRI, and NMRI.

Also known as

NMRI

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.