In deep brain stimulation, in vivo mapping of brain response is indispensable to secure its clinical applications. Estimation of current density distribution by stimulating currents can provide alternative way for understanding the therapeutic effects in electrical stimulation. MREIT method enables high-resolved mapping of electromagnetic tissue properties such as current density and conductivity of living tissues. In this study, we experimentally imaged current density distribution of in vivo canine brains by applying MREIT to electrical stimulation. The resulting current pathway and volume activation may provide useful information for adjusting the surgical planning and proving the therapeutic effects of DBS.