What is the definition or description of: mri scans?

Magnetic Resonace: This stands for magnetic resonance imaging. This modality uses a powerful magnet to obtain images based on the physiologic properties of the tissues being imaged. This modality does not use radiation.

An excellent test: An MRI scanner utilizes radio waves and a magnet to produce an image with sophisticated computers. No radiation is needed. Mris are outstanding at demonstrating various types of soft tissues. For example an MRI of the knee can differentiate the different types of cartilage that can tear. They're the best test for diagnosing brain, spine and joint abnormalities.