<classify> I-MRI isuselwa esenzakalweni sesayensi esibizwa nge-nuclear magnetic resonance NMR, eyatholwa ngawo-1930 ngu-Felix Bloch owayesebenza eNyuvesi yase-Stanford kanye no-Edward Purcell waseNyuvesi yase-Havard.  <topic>: sciencetechnology 