PROBLEM TO BE SOLVED: To objectively evaluate a respiratory condition of a patient when an artificial respirator is worn or the patient is extubated.SOLUTION: According to a dynamic analysis system 100, based on a plurality of frame images indicating a dynamic state of the chest of a subject H radiographed in a state that the subject is wearing an artificial respirator, a control part 21 of a console 2 calculates a signal value variation amount and/or a form variation amount of a predetermined structure in the chest in the plurality of frame images, generates evaluation information for evaluating a respiratory condition of the patient H when the artificial respirator is worn or the patient is extubated based on the calculated signal value variation amount and/or the form variation amount, and displays it in a display part 24.SELECTED DRAWING: Figure 3【課題】人工呼吸器の装着時や抜管時の患者の呼吸状態を客観的に評価できるようにする。【解決手段】動態解析システム１００によれば、コンソール２の制御部２１は、被検者に人工呼吸器を装着した状態で放射線撮影された被検者Ｈの胸部の動態を示す複数のフレーム画像に基づいて、複数のフレーム画像における信号値変化量及び／又は胸部の所定の構造物の形態変化量を算出し、算出した信号値変化量及び／又は形態変化量に基づいて、被検者Ｈの人工呼吸器の装着時又は抜管時の呼吸状態を評価するための評価情報を生成し、表示部２４に表示させる。【選択図】図３
