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    IMAGE PROCESSING APPARATUS, MAGNETIC RESONANCE IMAGING APPARATUS, AND SIGNAL SEPARATION METHOD
    4.
    发明公开
    IMAGE PROCESSING APPARATUS, MAGNETIC RESONANCE IMAGING APPARATUS, AND SIGNAL SEPARATION METHOD 审中-实审

    公开(公告)号：EP4345477A1

    公开(公告)日：2024-04-03

    申请号：EP23198739.7

    申请日：2023-09-21

    申请人： Fujifilm Healthcare Corporation

    发明人： NISHIHARA, Takashi ,  SHIRAI, Toru ,  BITO, Yoshitaka ,  TAKIZAWA, Masahiro

    IPC分类号： G01R33/48 ,  G01R33/485 ,  G01R33/44 ,  G01R33/50 ,  G01R33/56

    摘要： In separating water and fat with applying the Dixon method, peak intensities of fat with multiple peaks are individually calculated with a high degree of accuracy while reducing the number of variables to be estimated. Multiple images made up of signals acquired at different echo times (TEs) are used to solve a predetermined signal equation (signal model) expressing the relation between the pixel values (signal values) of the images and imaging parameters such as signal intensities of components and TE, thereby performing separation of signals for each component. For separating the signals, at least one of the variables (other than the signal intensity) included in the signal equation is subjected to a process (first estimation process) for refining a value roughly obtained, and then using thus refined value of the variable to estimate (second estimation process) other variables (including the signal intensity), the signals are separated.