Conductivity tensors inside the chosen rectangular ROI. Mun Bae Lee Hyung Joong Kim Eung Je Woo Oh In Kwon 10.1371/journal.pone.0197063.g006 https://plos.figshare.com/articles/figure/Conductivity_tensors_inside_the_chosen_rectangular_ROI_/6272000 <p>(A) Rectangular ROI marked in the <i>T</i><sub>2</sub>-weighted MR magnitude image. (B) and (C) Mean conductivities reconstructed using tDCS current and two injection currents, respectively. (D) and (E) Conductivity tensor images corresponding to (B) and (C) represented by tri-axial ellipsoids, respectively. The radii of each ellipsoid are proportional to the eigenvalues and their axes are oriented along the directions of the eigenvectors. The colors of the ellipsoid indicate the orientation of the principle eigenvector.</p> 2018-05-15 17:37:02 resonance diffusion tensor imaging brain stimulation technique flux density stimulation effects MR-DTI iterative scheme converges tDCS ADC diffusion coefficient Anisotropic conductivity tensor imaging substitution algorithm water molecules MRI scanner diffusion tensor J method scale parameter 2 mA anisotropic conductivity tensor anisotropic conductivity diffusion tensor extracellular ion-concentration