Using NMR to image inside peoples bodies!
- youtu.be/TQegSF4ZiIQ?t=326 the magnet is normally always on for the entire lifetime of the quipment!
- youtu.be/TQegSF4ZiIQ?t=465 usage of non-ionizing radiation (only radio frequencies) means that it is very safe to use. The only dangerous part is the magnetic field interacting with metallic objects.