e filtered 0D projections by accumulating the weighted contributions of the respective 0D projections corresponding to different projection planes. 00. The computer-implemented method of claim 0, wherein the calculating of the revised filtered back-projection density distribution as the weighted linear combination of the filtered back-projection density distribution and the at least one modified filtered back-projection density distribution includes determining at least one weight for the at least one modified filtered back-projection density distribution, and wherein the at least one weight is globally defined or depends on a sub-region of the reconstruction volume. 00. The computer-implemented method of claim 00, wherein the at least one weight is determined by way of a volume-domain cost function. 