Diffusion tensor echo planar magnetic resonance imaging of the inferior brain regions and
the spinal cord suffers from tissue–air and tissue–bone interfaces, which cause severe
susceptibility-induced artifacts. These artifacts consist of image distortions in the phase
encode direction and also affect signal intensity. To correct for these distortions, we used the
reversed gradient method. We find that most in-plane voxel displacements in the inferior
brain regions and the cervical spine can be corrected, yielding a good match of white matter …