 inverse to the 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; determining, for each respective volume position in the reconstruction volume and for each respective 0D projection, a respective modified weighted contribution of each of the respective filtered 0D projections, wherein determining the modified weighted contributions includes evaluating the respective filtered 0D projections at the in-plane coordinates corresponding to the respective volume position and applying the 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 modified weighted contributions of the 0D projections corresponding to different projection planes and applying the inverted look-up table to 