Figure 6

Montage displays of (a) a 3D NAB-induced multivoxel susceptibility map Δχ (in size of 32 × 32 × 32 matrix) and (b) the corresponding multivoxel fieldmap ΔB (calculated for B ₀ = 3 T) for z-slices of z = [1,2,...,16] (z = 1 at FOV surface and z = 16 through FOV center). The 32 × 32 × 32 multivoxel matrix is calculated from a 2048 × 2048 × 2048 fine grid matrix (grid resolution = 1 micron), by voxelization with the voxel size of 64 × 64 × 64 micron³. The 3D NAB is a Gaussian-shaped blob embedded in the cortical FOV.