Department of Biomedical Engineering, South China University of Technology, Guangzhou, 510006, China.
School of Information Science and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China.
J Med Syst. 2016 Apr;40(4):107. doi: 10.1007/s10916-016-0462-0. Epub 2016 Feb 22.
Surgical navigation systems can help doctors maximize the accuracy of surgeries, minimize operation durations, avoid mistakes, and improve the survival chances of patients. The tracking of device is an important component in surgical navigation systems. However, commercial surgical tracking devices are expensive, thus hindering the development of surgical navigation systems, particularly in developing countries. Therefore, an accurate and low-cost near-infrared optical tracking system is presented in this study for the real-time tracking of surgical tools and for measuring and displaying the positions of these tools relative to lesions and other targets inside a patient's body. A relative algorithm for the registration of surgical tools is also proposed in this paper to yield easy, safe, and precise tracking. Experiments are conducted to test the performance of the system. Results show that the mean square errors of the distances between the light-emitting points on the surgical tools are less than 0.3 mm, with the mean square error of distance between the tip and light-emitting points is less than 0.025 mm and that between two adjacent corner points is 0.2714 mm.
手术导航系统可以帮助医生提高手术的准确性、缩短手术时间、避免失误，并提高患者的生存率。设备跟踪是手术导航系统中的一个重要组成部分。然而，商用手术跟踪设备价格昂贵，因此限制了手术导航系统的发展，尤其是在发展中国家。因此，本研究提出了一种准确且低成本的近红外光学跟踪系统，用于实时跟踪手术工具，并测量和显示这些工具相对于患者体内病变和其他目标的位置。本文还提出了一种用于手术工具配准的相对算法，以实现轻松、安全和精确的跟踪。进行了实验来测试系统的性能。结果表明，手术工具上发光点之间的距离的均方误差小于 0.3 毫米，工具尖端与发光点之间的距离的均方误差小于 0.025 毫米，两个相邻角点之间的距离的均方误差为 0.2714 毫米。
