A high-resolution 3D T1-weighted structural image is acquired using a Magnetization Prepared Rapid Gradient Echo (MPRAGE) sequence with the following parameters: Repetition Time (TR) =2250 milliseconds; Echo Time (TE) =3.02 milliseconds; Inversion Time (TI) =900 milliseconds; flip angle =9 degrees; number of slices: 192; voxel dimensions =1 mm isotropic; GRAPPA acceleration factor = 2; acquisition time of 4 min and 32 s.