 determining, for each respective volume position in the reconstruction volume and for each respective 0D projection, a respective second modified weighted contribution of each of the respective filtered 0D projections, wherein the determining of the second modified weighted contributions includes evaluating the filtered 0D projections at the in-plane coordinates corresponding to the respective volume position and applying the at least one second look-up table to the respective filtered 0D projections evaluated at the in-plane coordinates; and accumulating, for each respective volume position in the reconstruction volume, the second modified weighted contributions of the 0D projections corresponding to different projection planes and applying the inverted second look-up table to a result to yield the second modified filtered back-projection density distribution. 0. The computer-implemented method of claim 0, wherein the at least one look-up table is at least in parts determined by the characteristics of a function. 00. The computer-implemented method of claim 0, wherein the characteristics of the function determining the at least one look-up table at least in parts is at least one of a slope of the function, a curvature of the function and a zero of the function. 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 0, wherein the calculating of the at least one modified filtered back-projection density distribution indicative of high outlier values included in the respective filtered 0D projections comprises: defining at least one first look-up table overweighing high outlier values in at least a relevant domain; defining an inverted first look-up table