1. An imaging system comprising: a list-mode memory which stores data generated of a subject moving through a plurality of motion states in a list-mode; at least one processor programmed to perform the steps of: sorting the list-mode data by motion state, reconstructing the list-mode data into high spatial resolution, low temporal resolution images, each in a different one of a plurality of motion states, deriving from the high spatial, low temporal resolution images a correction to the list mode data which transforms the list-mode data into a selected reference motion state, and reconstructing the motion corrected list-mode data into a static image or dynamic images of high temporal and spatial resolution.