1. 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 for each event the timestamp and at least one spatial voxel assignment; 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.