it use to miraculous gadget ( such as dials, gauges, electrodes, magnets, and blinkers) that are believed to cure certain health conditions

So you and your partner don’t get sexually transmitted diseases and so your partner doesn’t get pregnant

Unlike  ct scans, which use x-rays,  mri scans  use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures.  differences between  normal and abnormal tissue is often clearer on an  mri  image than a  ct.you can see more with a mri scan. for example on an mri you can see internal bleeding.