An improved method for assessing the technical accuracy of optical tracking systems for orthopaedic surgical navigation
An improved method for assessing the technical accuracy of optical tracking systems for orthopaedic surgical navigation
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DOI：
10.1002/rcs.2285
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发表时间：
2021-06-03
影响因子：
2.5
通讯作者：
De Baets, Patrick
中科院分区：
文献类型：
--
作者：
Herregodts, Stijn;Verhaeghe, Mathijs;De Baets, Patrick
背景光学跟踪系统（OTS）是许多现代计算机辅助骨科手术（CAOS）系统的重要组成部分，但在准确性评估中，患者运动往往被忽略。本研究的目的是开发一个具有代表性的测试，以评估包括患者运动的OTS的准确性，并证明指针设计和OTS choice.Method的效果与动态参考基地（DRB）连接的移动的体模的设计和建造。对静态和运动体模的点配准正确率和精度进行了评价。结论OTS在CAOS应用中的准确性应通过运动体模测量进行评估，因为静态框架的TTRE评估显著优于运动体模。低估了测量误差。
Background Optical tracking systems (OTSs) are essential components of many modern computer assisted orthopaedic surgery (CAOS) systems but patient movement is often neglected in the evaluation of the accuracy. The aim of this study was to develop a representative test to assess the accuracy of OTSs including patient movement and demonstrate the effect of pointer design and OTS choice.Method A mobile phantom with dynamic reference base (DRB) attached was designed and constructed. The point registration trueness and precision were evaluated for measurements with both a static and moving phantom.Results The trueness of the total target registration error (TTRE) was 1.4 to 2.7 times worse with a moving phantom compared to a static phantom.Conclusion The accuracy of OTSs for CAOS applications should be evaluated by measurements with a moving phantom as the evaluation of the TTRE with a static frame significantly underestimates the measurement error.