An imaging support apparatus supports imaging by an imaging apparatus which radiographically images a dynamic state in a target site with a cyclic nature to obtain a dynamic image. The imaging support apparatus includes the following. Alive body information obtainer obtains live body information of an examined subject from a point before starting actual imaging with the imaging apparatus. A hardware processor evaluates stability for a cycle of the dynamic state in the target site based on the live body information obtained by the live body information obtainer.