Magnetic resonance imaging (MRI) is an imaging test. It provides a picture of the body’s interior, which helps doctors diagnose a disorder and determine how severe the disorder is. How does MRI work?
High-energy radiation waves that can penetrate most substances show internal body images.
A magnetic field and very high frequency radio waves produce highly detailed images.
High-frequency sound waves produce images of internal organs.
X-ray images are sent to a computer that creates cross-sectional images.
