Stochastic backprojection for 3d image reconstruction

A system for computed tomography (CT) image reconstruction, the system comprising at least one electronic processor that executes instructions to perform operations comprising:

• acquiring, by a detector grid of a computed tomography system, detector signals for a location within an object of interest representing a voxel, wherein each detector signal of a plurality of the detector signals is obtained from an x-ray passing through the location at a different viewing angle;
• reconstructing a three-dimensional representation of at least the object of interest, the three-dimensional representation comprising the voxel, wherein the reconstructing comprises computationally perturbing a location of each detector signal of the plurality of detector signals within the detector grid, wherein the computationally perturbing corresponds to randomly perturbing a location of the x-ray within the voxel;
• and
• outputting the three-dimensional representation.