o be performed and an example of that is also included.</span></div><h2  class = 'S5' id = 'H_AA52FBA9' ><span>List-mode reconstruction/custom detectors</span></h2><div  class = 'S1'><span>There is also a "simplified" version of the forward/backward  projection class. This simplified version accepts the detector  coordinates for each coincidence as well as the FOV size and image size. The input structure is thus:</span></div><div  class = 'S1'><span style=' font-family: monospace;'>A = forwardBackwardProjec