INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM

• Main Authors: ISHIKAWA RYO, KIMOTO TATSUYA, TANAKA TORU
• Format: Patent
• Language: English; Japanese
• Published: 23.03.2023
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

To accurately match the dynamic phases of observation portions between a plurality of moving images while reducing a calculation amount required for reconstitution.SOLUTION: An information processing device comprises: projection data acquisition means which acquires first projection data obtained by imaging a dynamic state of a subject in a first imaging range including a first division area and second projection data obtained by imaging the dynamic state of the subject in a second imaging range including a second division area; first reconstitution means which acquires a first moving image obtained by reconstituting a first partial area of the first imaging range and a second moving image obtained by reconstituting a second partial area of the second imaging range; similarity acquisition means which acquires similarity concerning the dynamic state of the subject between the respective frames of the first moving image and the second moving image; and reconstitution timing acquisition means which, on the basis of the similarity, acquires first timing of reconstituting an image of the first division area and second timing of reconstituting an image of the second division area.SELECTED DRAWING: Figure 1 【課題】再構成に要する計算量を抑えながら複数の動画像の間で観察部位の動態の位相を高精度に合わせる技術を提供する。【解決手段】本開示の情報処理装置は、被検体の動態を前記第１の分割領域が含まれる第１の撮像範囲で撮像した第１の投影データと、前記第２の分割領域が含まれる第２の撮像範囲で撮像した第２の投影データとを取得する投影データ取得手段と、前記第１の撮像範囲の第１の部分領域を再構成した第１の動画像と、前記第２の撮像範囲の第２の部分領域を再構成した第２の動画像を取得する第１の再構成手段と、前記第１の動画像と前記第２の動画像の各フレーム間の前記被検体の動態に関する類似度を取得する類似度取得手段と、前記類似度に基づいて、前記第１の分割領域の画像を再構成する第１のタイミングと、前記第２の分割領域の画像を再構成する第２のタイミングを取得する再構成タイミング取得手段とを有する。【選択図】図１