Ikintu kinini kandi cyingenzi cya MRI & NMR ni magnet.Igice kigaragaza urwego rwa magneti rwitwa Tesla.Ikindi gice gisanzwe cyo gupima gikoreshwa kuri magnesi ni Gauss (1 Tesla = 10000 Gauss).Kugeza ubu, magnesi zikoreshwa mu gufata amashusho ya magnetiki resonance ziri mu ntera ya 0.5 Tesla kugeza 2.0 Tesla, ni ukuvuga 5000 kugeza 20000 Gauss.