Magnetic resonance imaging which is also called MRI is a diagnostic imaging technique which produces 3D images of internal body parts.
Human body contains 70% water inside it and these water molecules have H+ atoms inside them. The Hydrogen (H+) atoms contain nuclear magnetic resonance (NMR) signal inside their nucleus. Therefore MRI is used to produce 3D images of internal body parts by the help of these NMR signals present in water molecules.
MRI can be used to diagnose various human diseases like cancer, joint and muscle problems, eye and ear defects, heart diseases and brain tumor etc.