es. In at least one example embodiment of the computer-implemented method, calculating the at least one modified filtered back-projection density distribution indicative of high outlier values included in the filtered 0D projections comprises: defining at least one first look-up table that overweighs high outlier values in at least a relevant domain; defining an inverted first look-up table that is inverse to the first look-up table; determining, for each volume position in the reconstruction volume and for each 0D projection, two-dimensional in-plane coordinates by projecting the volume positions onto the projection plane defined by the 0D projections; determining, for each volume position in the reconstruction volume and for each 0D projection, a first modified weighted contribution of each of the filtered 0D projections, wherein determining the first modified weighted contributions includes evaluating the filtered 0D projections at the in-plane coordinates corresponding to the volume position and applying the first look-up table to the filtered 0D projections evaluated at the in-plane coordinates; and accumulating, for each volume position in the reconstruction volume, the first modified weighted contributions of the 0D projections corresponding to different projection planes and applying the inverted first look-up table to the result to yield the first modified filtered back-projection density distribution. The at least one 