Display control is performed for generation of a timeline screen in such a way that requester-side event information corresponding to request information is to be displayed at one of display areas separated from each other by a timeline axis on the timeline screen and that interpreter-side event information corresponding to radiological interpretation result information is to be displayed at the other of the display areas on the timeline screen, wherein the timeline axis is generated on the basis of time-and-date information of the request information and of the radiological interpretation result information determined on the basis of patient information.