Methods and apparatus for calibrating CT X-ray beam tracking loop
    1.
    发明申请
    Methods and apparatus for calibrating CT X-ray beam tracking loop 失效
    用于校准CT X射线束追踪回路的方法和装置

    公开(公告)号:US20060251210A1

    公开(公告)日:2006-11-09

    申请号:US11124331

    申请日:2005-05-06

    CPC分类号: A61B6/585 A61B6/4275

    摘要: A method for determining tracking control parameters for positioning an x-ray beam of a computed tomography imaging system, the imaging system including a movable collimator positionable in steps and a detector array including a plurality of detector elements arranged in rows and channels, the rows extending from a detector A-side to a detector B-side. The method includes determining a detector A-side and a detector B-side target beam penumbra position, computing a plurality of Z-ratio curves corresponding to different detector rows and detector channels, and comparing the Z-ratio curves at the detector A-side and detector B-side target beam positions to determine the optimal Z-ratio curve and corresponding detector channels and rows for controlling the X-ray beam positioning.

    摘要翻译: 一种用于确定用于定位计算机断层摄影成像系统的x射线束的跟踪控制参数的方法,所述成像系统包括可定位成可移动的准直器和包括排列成行和通道的多个检测器元件的检测器阵列,所述行延伸 从检测器A侧到检测器B侧。 该方法包括确定检测器A侧和检测器B侧目标束半影位置,计算对应于不同检测器行和检测器通道的多个Z比曲线,以及比较检测器A侧的Z比曲线 和检测器B侧目标光束位置,以确定最佳Z比率曲线以及用于控制X射线束定位的相应检测器通道和行。

    Methods and apparatus for calibrating CT x-ray beam tracking loop
    2.
    发明授权
    Methods and apparatus for calibrating CT x-ray beam tracking loop 失效
    用于校准CT X射线束跟踪循环的方法和装置

    公开(公告)号:US07257187B2

    公开(公告)日:2007-08-14

    申请号:US11124331

    申请日:2005-05-06

    IPC分类号: H05G1/30

    CPC分类号: A61B6/585 A61B6/4275

    摘要: A method for determining tracking control parameters for positioning an x-ray beam of a computed tomography imaging system, the imaging system including a movable collimator positionable in steps and a detector array including a plurality of detector elements arranged in rows and channels, the rows extending from a detector A-side to a detector B-side. The method includes determining a detector A-side and a detector B-side target beam penumbra position, computing a plurality of Z-ratio curves corresponding to different detector rows and detector channels, and comparing the Z-ratio curves at the detector A-side and detector B-side target beam positions to determine the optimal Z-ratio curve and corresponding detector channels and rows for controlling the X-ray beam positioning.

    摘要翻译: 一种用于确定用于定位计算机断层摄影成像系统的x射线束的跟踪控制参数的方法,所述成像系统包括可定位成可移动的准直器和包括排列成行和通道的多个检测器元件的检测器阵列,所述行延伸 从检测器A侧到检测器B侧。 该方法包括确定检测器A侧和检测器B侧目标束半影位置,计算对应于不同检测器行和检测器通道的多个Z比曲线,以及比较检测器A侧的Z比曲线 和检测器B侧目标光束位置,以确定最佳Z比率曲线以及用于控制X射线束定位的相应检测器通道和行。