Fig. 1.

3D multi-band ms-EPI acquisition and 3D-MB-MUSE model. When (a) two slabs (pink and blue) are simultaneously excited to form a multi-band slab (purple), the excited slab profiles in z (b) are encoded into a slice-encoded profile in kz (c). In 3D ms-EPI, each of three kz-planes is sub-sampled by four interleaved shots (d), resulting in a reduced-FOV aliased kz-plane image acquired for each shot (e). For a given aliased voxel in all aliased shot images in all kz-planes, the 3D-MB-MUSE model (f) incorporates phase variations across both shots and kz-planes as well as slice specific coil sensitivities to produce full FOV un-aliased images for all three slices in both excited bands that are free of shot-to-shot and through-plane motion artifacts associated with 3D ms-EPI acquisitions.