1. A non-transitory storage medium storing instructions executable by a digital processor to perform a method comprising: providing imaging data comprising events wherein each event records at least spatial localization information for a decay event and a timestamp for the decay event; reconstructing the imaging data using a digital processing device implementing an event-preserving reconstruction algorithm to generate an event-preserving reconstructed image dataset comprising the events of the provided imaging data with for each event the timestamp and at least one spatial voxel assignment that assigns the event to a single voxel or to one or more voxels with a membership probability for each voxel; and performing a post-reconstruction image processing operation on the image, the post-reconstruction image processing operation utilizing timestamps of the event-preserving reconstructed image dataset.