The present invention displays the motion of a region where the shape changes at every respiration or every heartbeat. Provided is a diagnostic assistance program that is for analyzing images of a human body and displaying an analysis result, and that causes a computer to execute: a process (S1) for acquiring a plurality of frame images from a database in which the images are stored； a process (S2) for identifying a respiratory cycle on the basis of pixels in a specific region in each of the frame images； a process (S3) for detecting the lung field on the basis of the identified respiratory cycle； a process for dividing (S4) the detected lung field into a plurality of block regions and calculating (S5) changes in images in each of the block regions in the respective frame images； a process (S6) for subjecting the changes in the images of each of the block regions in the respective frame images to a Fourier analysis； and a process (S7) for displaying on a display each of the images that have undergone the Fourier analysis as a pseudo-color image.
