Wittmann Wolfgang, Wenger Thomas, Loewe Erik, Lueth Tim C
Ergosurg GmbH Ismaning, Institute of Micro Technology and Medical Device Technology, Technische Universitaet Muenchen, Garching, Germany.
Annu Int Conf IEEE Eng Med Biol Soc. 2011;2011:1237-40. doi: 10.1109/IEMBS.2011.6090291.
Image-guided surgical navigation is on the rise in many different areas of modern medicine and is already an established standard in some disciplines like ear nose and throat (ENT) or maxillofacial surgery. When evaluating surgical navigation systems the absolute accuracy of the device is of major concern to the surgeon. The following work presents two different ways of measuring the accuracy of surgical navigation systems using the example of the KARL STORZ Navigation Panel Unit (NPU). According to these protocols the FDA approval of the NPU navigation system was prepared. In a first series of experiments the accuracy under realistic surgical conditions is evaluated with a phantom of a human head, which is manufactured in rapid-prototyping processes. In another series of experiments a custom registration board is used, which provides means to evaluate the accuracy under optimal conditions and also allows further measurements regarding the registration error, that are not possible with the phantom. In the experiments an accuracy of 1.44 mm ± 0.18 mm was measured in the surgical setup and 0.63 mm ± 0.07 mm under ideal conditions.
图像引导手术导航在现代医学的许多不同领域中日益兴起，并且在某些学科，如耳鼻喉科（ENT）或颌面外科，已经成为既定标准。在评估手术导航系统时，设备的绝对精度是外科医生主要关注的问题。以下工作以卡尔史托斯导航面板单元（NPU）为例，介绍了两种测量手术导航系统精度的不同方法。根据这些方案，准备了NPU导航系统的FDA批准文件。在第一系列实验中，使用通过快速成型工艺制造的人头模型，评估在实际手术条件下的精度。在另一系列实验中，使用了定制的配准板，它提供了在最佳条件下评估精度的方法，并且还允许进行关于配准误差的进一步测量，而使用模型则无法进行这些测量。在实验中，手术设置下测量的精度为1.44毫米±0.18毫米，理想条件下为0.63毫米±0.07毫米。
