english: So we've all heard of MRIs. MRIs use magnetic fields and radio waves and they take snapshots of your brain or your knee or your stomach, grayscale images that are frozen in time.
non_english: Svi smo čuli za MR (magnetna rezonancija). Tokom nje se koriste magnetna polja i radio talasi i uzimaju se snimci vašeg mozga ili vašeg kolena, vašeg stomaka, slike u sivim tonovima koje su  zamrznute u vremenu.