METHOD AND SYSTEM FOR CHARACTERIZING AND VISUALIZING ELECTROMAGNETIC TRACKING ERRORS
    1.
    发明申请
    METHOD AND SYSTEM FOR CHARACTERIZING AND VISUALIZING ELECTROMAGNETIC TRACKING ERRORS 有权
    用于表征和可视化电磁跟踪误差的方法和系统

    公开(公告)号:US20120323111A1

    公开(公告)日:2012-12-20

    申请号:US13582062

    申请日:2011-02-21

    IPC分类号: A61B5/055

    摘要: A calibration/surgical tool (90, 160) includes an electromagnetic sensor array (30) of two or more electromagnetic sensors in a known geometrical configuration. Electromagnetic tracking errors are characterized by a mapping of pre-operative absolute and relative errors based on a movement of a calibrated calibration/surgical tool (90, 160) through a pre-operative electromagnetic field. Using statistical mapping, a desired absolute error field (46) is measured either in the clinic as the part of daily quality control checks, or before the patient comes in or in vivo. A resulting error field (46) may be displayed to the physician to provide clear visual feedback about measurement confidence or reliability of localization estimates of the absolute errors in electromagnetic tracking.

    摘要翻译: 校准/外科手术工具(90,160)包括具有已知几何构型的两个或多个电磁传感器的电磁传感器阵列(30)。 电磁跟踪误差的特征在于基于经校准的校准/外科手术工具(90,160)通过术前电磁场的运动的术前绝对和相对误差的映射。 使用统计学绘图,在临床上测量期望的绝对误差场(46)作为日常质量控制检查的一部分,或患者进入或体内之前。 可以向医师显示产生的误差字段(46),以提供关于电磁跟踪中的绝对误差的定位估计的测量置信度或可靠性的清晰的视觉反馈。

    Method and system for characterizing and visualizing electromagnetic tracking errors
    2.
    发明授权
    Method and system for characterizing and visualizing electromagnetic tracking errors 有权
    表征和可视化电磁跟踪误差的方法和系统

    公开(公告)号:US09165114B2

    公开(公告)日:2015-10-20

    申请号:US13582062

    申请日:2011-02-21

    摘要: A calibration/surgical tool includes an electromagnetic sensor array of two or more electromagnetic sensors in a known geometrical configuration. Electromagnetic tracking errors are characterized by a mapping of pre-operative absolute and relative errors based on a movement of a calibrated calibration/surgical tool through a pre-operative electromagnetic field. Using statistical mapping, a desired absolute error field is measured either in the clinic as the part of daily quality control checks, or before the patient comes in or in vivo. A resulting error field may be displayed to the physician to provide clear visual feedback about measurement confidence or reliability of localization estimates of the absolute errors in electromagnetic tracking.

    摘要翻译: 校准/外科手术工具包括具有已知几何构型的两个或多个电磁传感器的电磁传感器阵列。 电磁跟踪误差的特征在于基于校准的校准/外科手术工具通过术前电磁场的运动的术前绝对和相对误差的映射。 使用统计映射,期望的绝对误差字段在诊所中测量为日常质量控制检查的一部分,或患者进入或体内之前。 可以向医师显示产生的误差字段,以提供关于电磁跟踪中的绝对误差的定位估计的测量置信度或可靠性的清晰的视觉反馈。