PET reconstruction. An axial slice and a coronal slice in a CT images, a
reconstructed PET image, and a relative PET error map in (a) MRAC-1, (b) MRAC-2,
(c) MRAC-3, the proposed MRAC with deep learning, and (e) CTAC. As seen in PET
error maps the proposed MRAC shows much reduced percent error (< 1%) in
most brain regions over other MRACs.