MR SCANNER

a diagnostic device employing nuclear magnetic resonance to display computer-generated sectional images of the body, consisting of a large, body-encircling magnet that generates a strong, uniform magnetic field which interacts with radio waves to excite the nuclei of hydrogen atoms, or other specific atoms, and a detection system that picks up the signals from the body and transforms them into a visual image. Also called MR imager, MRI scanner, NMR scanner .