Conclusions. Navigation does indeed provide a higher accuracy in the placement of pedicle screws for most of the subgroups presented.

结论：在以上提到的大部分组群中，导航对于椎弓根螺钉置钉确实能提供一个较高的准确性。

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The method has low requirements for the placement attitude and assembling accuracy of binocular sensor, thus the calculation error of coordinates produced by medium refraction can be removed.

该方法对摄象机的摆放姿态与双目传感的装配精度要求较低，可去除介质折射产生的坐标计算误差。

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Summary of Background Data. Safety concerns have driven specific interests in the accuracy and precision of pedicle screw placement.

背景资料概述：由于安全性的关系，使得人们对椎弓根螺钉置钉的准确性和精确度有着特殊的兴趣。

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