
The MRI
The purpose of a MRI or magnetic resonance imaging machine, is to harmlessly work out what internally is physically wrong with you, without involving exploratory surgery. MRIs have 3 types: conventional, open bore and fully open. In an conventional MRI, a long toroidal (Doughnut-shaped) electromagnet supplies the electromagnetic force, and the subject is put through a long 'tunnel', where a full-body scan is supplied.