Magnetization prepared rapid gradient echo (MPRAGE). TR = 4000 ms, TI = 1100 ms, echo spacing = 6 ms, TE = 2.2 ms, FA = 4°. Image matrix = 256×256×256. The number of subvoxels is 32×1×1. The total number of subvoxels is 103,332,864. The calculation time was 5,808.1 s.