PROBLEM TO BE SOLVED: To provide information effective for diagnosis concerning the diagnosis using a chest region kinetic image.SOLUTION: A photographing apparatus 10 kinetically photographs the chest region of a subject M naturally breathing, obtains a plurality of kinetic images in a plurality of time phases, calculates, as feature quantities, the amplitude by cycle and the cycle of kinetic state of the subject M, which is obtained based on a change in the time phase of the average signal value of the kinetic image, and generates diagnosis support information, based on the change between the respective cycles concerning the feature quantity, and causes a display part 34 display the information.COPYRIGHT: (C)2010,JPO&INPIT【課題】胸部動態画像を用いた診断において、診断のための有効な情報を提供する。【解決手段】撮影装置10は、自然呼吸をする被写体Mの胸部を動態撮影し、複数の時間位相における複数の動態画像を取得し、当該動態画像の平均信号値の時間位相における変化から得られる被写体Mの動態の周期毎の振幅及び周期を特徴量として算出し、この特徴量の各周期間の変化に基づいて診断支援情報を生成して表示部34に表示させる。【選択図】図3