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Tracking Accuracy Evaluation of Electromagnetic Sensor-Based Colonoscope Tracking Method

机译：基于电磁传感器的结肠镜跟踪方法的跟踪精度评估

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This paper reports a detailed evaluation results of a colonoscope tracking method. A colonoscope tracking method utilizing electromagnetic sensors and a CT volume has been proposed. Tracking accuracy of this method was evaluated by using a colon phantom. In the previously proposed paper, tracking errors were measured only at six points on the colon phantom for the accuracy evaluation. The point number is not enough to evaluate relationships between the tracking errors and positions in the colon. In this paper, we evaluated the colonoscope tracking method based on more detailed measurement results of the tracking errors. We measured tracking errors at 52 points on the colon phantom and visualized magnitudes of the tracking errors. From our experiments, tracking errors in the ascending and descending colons were enough small to perform colonoscope navigations. However, tracking errors in the transverse and descending colons were large due to colon deformations.
机译：本文报告了结肠镜跟踪方法的详细评估结果。已经提出了利用电磁传感器和CT体积的结肠镜跟踪方法。通过使用结肠体模评估此方法的跟踪精度。在先前提出的论文中，仅在结肠体模上的六个点处测量了跟踪误差，以进行准确性评估。点号不足以评估跟踪误差与结肠中位置之间的关系。在本文中，我们根据更详细的跟踪误差测量结果对结肠镜跟踪方法进行了评估。我们在结肠体模上的52个点上测量了跟踪误差，并可视化了跟踪误差的大小。根据我们的实验，升结肠和降结肠中的跟踪误差足够小，可以执行结肠镜导航。但是，由于结肠变形，横结肠和降结肠的跟踪误差很大。

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