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    • 9. 发明授权
    • Method for determining median line
    • 方法确定中线
    • US5427100A
    • 1995-06-27
    • US12919
    • 1993-02-03
    • Noboru HigashiKoichi SanoTetsuo Yokoyama
    • Noboru HigashiKoichi SanoTetsuo Yokoyama
    • A61B5/055G01R33/48G01R33/54G01R33/56
    • G01R33/56
    • Disclosed is a method for automatically determining the median line of a selected region of a human body so as to simplify complex imaging required hithero for a magnetic resonance imaging apparatus, and, in the method, an artifact of the imaged selected region of the human body is utilized to automatically determine the median line. For example, two artifacts 1010 and 1020 intersecting each other appear from the superior sagittal sinus as shown in FIG. 1 when the direction of phase encoding is changed. By subtracting one of these artifacts 1010 and 1020 from the other and calculating the absolute value of the result of subtraction, the point 1030 of intersection of the artifacts determines the location of the superior sagittal sinus which is the source of apperance of the artifacts, so that the median line can be automatically determined on the basis of the result of determination of location of the superior sagittal sinus.
    • 公开了一种用于自动确定人体所选择的区域的中线的方法,以便简化对于磁共振成像设备所需的复合成像所需的触角,并且在该方法中,人体的成像选定区域的假象 用于自动确定中线。 例如,如图1所示,从上矢状窦出现两个彼此相交的假象1010和1020。 1当相位编码的方向改变时。 通过从另一个中减去这些伪影1010和1020中的一个并计算减法结果的绝对值,伪像的交点点1030确定作为人造物的外观源的上矢状窦的位置,因此 可以根据确定上矢状窦位置的结果自动确定中线。