"Version: 20230201"--Title page verso.Includes bibliographical references.Introduction for residents, technologists, scientists, and for anyone curious -- 1. Five big ideas for MRI -- 1. Introduction -- 1.1. Waves -- 1.2. MRI as a water image -- 1.3. Multiple looks (contemplating image weighting and the multiple appearances possible in MRI) -- 1.4. Interlude and segue into concepts of electrici…