1. A dynamic image processing system comprising: an imaging unit that carries out dynamic imaging of a target part of a human body under examination and generates a plurality of frames of images indicating a dynamic condition of the target part of the human body under examination; a calculation unit that calculates from said frames of images a dynamic feature amount of the target part of the human body under examination; a display unit that displays on a display screen the plurality of frames of images; and a display control unit that displays at least one of the plurality of frames of images and the calculated dynamic feature amount on the display screen concurrently.