Ingxenye enkulu nebalulekile ye-MRI & NMR iyimagnethi.Iyunithi ekhomba leli banga likazibuthe ibizwa ngokuthi i-Tesla.Enye iyunithi evamile yokulinganisa esetshenziswa kuzibuthe iGauss (1 Tesla = 10000 Gauss).Njengamanje, omazibuthe abasetshenziselwa ukucabanga kwe-magnetic resonance baphakathi kuka-0.5 Tesla kuya ku-2.0 Tesla, okungukuthi, 5000 kuya ku-20000 Gauss.