PROBLEM TO BE SOLVED: To detect a body motion that affects diagnosis in photographing a moving picture of a subject.SOLUTION: A body motion detection device includes: acquisition means for acquiring a plurality of pieces of image data from imaging means capable of repeatedly generating image data of a subject S on the basis of one photographing operation； site designation means for designating a specific site in which it is required not to generate a body motion different from a specific body motion which is a diagnostic object for each image data acquired by the acquisition means； movement detection means for detecting a movement of the specific site designated by the site designation means on the basis of the plurality of pieces of image data； and body motion determination means for determining presence or absence of a body motion different from the specific body motion on the basis of a movement detected by movement amount calculation means.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2020,JPO&INPIT【課題】被検体の動画撮影を行う際に、診断に影響する体動を検出できるようにする。【解決手段】１回の撮影操作に基づいて被検体Ｓの画像データを繰り返し生成することが可能な撮影手段から複数の画像データを取得する取得手段と、取得手段が取得した各画像データに対し、診断対象となる特定の体動とは異なる体動を生じないことが求められる特定部位を指定する部位指定手段と、複数の画像データに基づいて、部位指定手段が指定した特定部位の動作を検出する動作検出手段と、移動量算出手段が検出した動作に基づいて特定の体動とは異なる体動の有無を判定する体動判定手段と、備える。【選択図】図７
