An image-generating apparatus comprising: a dynamic image acquiring section that acquires a dynamic image in which a predetermined region of a human body or an animal is chronologically captured; a detecting section that detects a time variation in a physical state of said predetermined region; a diagnosis assisting information generating section that performs analysis based on the time variation in the physical state of said predetermined region detected by said detecting section, and generates a first and second analysis result based on said analysis as diagnosis assisting information, said diagnosis assisting information including a first analysis result and a second analysis result based on said analysis, a holding unit that holds said diagnosis assisting information in temporal association with said dynamic image; and a display image generating section that comprises a dynamic image display portion adapted to generate a playback image adapted to play back said dynamic image, said displaying image is an image that includes a summary display portion that is adapted to display a progress bar corresponding to the progress of said playback image and wherein the first analysis result corresponds to the respiration phase of a right lung field and the second analysis result corresponds to the respiration phase of a left lung field and wherein the progress bar and said analysis results are displayed in an integrated manner on said progress bar and such that said first and second analysis results are displayed as parallel bars so as to be distinguishable at a glance in a time axis direction, wherein said detecting section includes a predetermined region period specifying portion that is adapted to specify a predetermined region period detected by said detection section, which detected and specified period is a periodic time variation in a physical state of said predetermined region. a dynamic image acquiring section that acquires a dynamic image in which a predetermined region of a human body or an animal is chronologically captured; a detecting section that detects a time variation in a physical state of said predetermined region; a diagnosis assisting information generating section that performs analysis based on the time variation in the physical state of said predetermined region detected by said detecting section, and generates a first and second analysis result based on said analysis as diagnosis assisting information, said diagnosis assisting information including a first analysis result and a second analysis result based on said analysis, a holding unit that holds said diagnosis assisting information in temporal association with said dynamic image; and a display image generating section that comprises a dynamic image display portion adapted to generate a playback image adapted to play back said dynamic image, said displaying image is an image that includes a summary display portion that is adapted to display a progress bar corresponding to the progress of said playback image and wherein the first analysis result corresponds to the respiration phase of a right lung field and the second analysis result corresponds to the respiration phase of a left lung field and wherein the progress bar and said analysis results are displayed in an integrated manner on said progress bar and such that said first and second analysis results are displayed as parallel bars so as to be distinguishable at a glance in a time axis direction, wherein said detecting section includes a predetermined region period specifying portion that is adapted to specify a predetermined region period detected by said detection section, which detected and specified period is a periodic time variation in a physical state of said predetermined region.