Fig 2. Comparison of T1-weighted, T1+T2*-weighted, and T2-weighted (top to bottom) MR imaging in anterior/posterior commissure orientation. Note the T2* contrast of vessels and iron-containing structures. The outlines of the Schaltenbrand-Wahren atlas are shown as overlay (blue). The STN and red nucleus (RN) are assigned. A mismatch between the atlas and individual anatomy of the STN can be seen. The apparent inconsistency between T2*- and T2-weighted images (as seen on the left and right STN) demonstrates the limitations when coregistering the multisection T2-weighted data with the multiecho 3D datasets.