A system and method include acquisition of a plurality of event data associated with an object, each of the plurality of event data associated with a position and a time, assigning of each event data to one of a plurality of time-based frames based on a time associated with the event data, each of the plurality of time-based frames associated with a respective time period, assigning of each event data to one of a plurality of motion-based frames based on a time associated with the event data, each of the plurality of motion-based frames associated with a respective time period associated with a respective motion state, determination of a confidence score based on the plurality of time-based frames of event data and on the plurality of motion-based frames of event data, and presentation of the confidence score and a control selectable to initiate motion-correction of the event data.