A blood flow dynamic analysis apparatus analyzes the kinetics of a blood flow in a subject by injecting a contrast medium into the subject. The apparatus includes a map generation device computing the value of a parameter related to time change in the concentration of the contrast medium injected into the subject and generating a map of the parameter, and a display condition determination device determining a display condition for the map based on a threshold value of the parameter for discriminating between a lesion region where a lesion exists and an unaffected region where no lesion exists in the map.