 result to yield the 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. 0. 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. 0. The computer-implemented method of claim 0, wherein the function determining the at least one look-up table is at least in parts a polynomial function, a monomial function or a power function. 0. The computer-implemented method of claim 0, wherein the function determining the at least one look-up table is at least in parts a polynomial function, a monomial function or a power function. 0. The computer-implemented method of claim 0, wherein the at least one look-up table is globally defined or depends on the 0D projection or on a sub-region within the 0D projection. 0. The computer-implemented method of claim 0, wherein the calculating of the at least one modified filtered back-projection density distribution indicative of low outlier values included in the filtered 0D projections comprises defining at least one second look-up table overweighing high outlier values in at least a relevant domain; defining an inverted second look-up table, inverse to the at least one second look-up table; determining, for each respective volume position in the reconstruction volume and for each respective 0D projection, respective two-dimensional in-plane coordinates by projecting the respective volume positions onto the projection plane defined by the respective 0D projections; 