Two methods to map the magnetic field distributions generated by tDCS’s electric currents using MRI were evaluated in this work. First method Stimulus/Rest Difference and second GLM. Phase images were preprocessed using motion parameters calculated by SPM from the magnitude images. To evaluate the results, simulated magnetic field distribution was calculated using simulated data for the electric current distribution. The first method showed similarities with simulated data except for one case, while the second method showed magnetic field variations only at occipital region. These results points toward the possibility of mapping these very low intensity magnetic fields using MRI.