PROBLEM TO BE SOLVED: To improve efficiency of processing for derivation of an image observation.SOLUTION: A processor comprises: an image feature amount acquisition means acquiring a first image feature amount and a second image feature amount from a medical image； and a derivation means that derives an image observation of multiple items belonging to a first observation type based on the first image feature amount, and derives an image observation of multiple items belonging to a second observation type different from the first observation type based on the second image feature amount different from at lease a part of the contents of the first image feature amount.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】 画像所見を導出するための処理の効率を向上する。【解決手段】 医用画像から第１の画像特徴量と第２の画像特徴量とを取得する画像特徴量取得手段と、前記第１の画像特徴量に基づいて第１の所見種別に属する複数の項目の画像所見を導出し、前記第１の画像特徴量とは少なくとも一部が異なる前記第２の画像特徴量に基づいて前記第１の所見種別とは異なる第２の所見種別に属する複数の項目の画像所見とを導出する導出手段と、を備える。【選択図】 図３
