複数台のWi-Fi化した光学式三次元位置計測システムを用いたワイヤレス手術ナビゲーションシステムの開発

抄録

In this study, we have developed a wireless surgical navigation system with a multi Wi-Fi optical 3D tracking system for image-guided surgery. The proposed system can obtain position information using these two concurrently usable wireless systems to guide an instrument. As a result, it can eliminate the line-of-sight problem of tracking markers. Furthermore, the use of the multi Wi-Fi optical 3D tracking system reduces the need for connecting cables. Moreover, the system is highly robust owing to the unitization of the system components using Wi-Fi. The two navigation systems can guide the instrument concurrently using position information obtained from the tracking systems. Furthermore, they can easily perform re-registration by using the relative position of the tracking systems and the instrument position information. We evaluated the mean Target Registration Error (TRE) of the system by performing re-registration ten times. The mean TRE of the ten points of the phantom was found to be 1.43±0.75 and 1.43±0.77 mm by the fast Wi-Fi tracking system and the second Wi-Fi tracking system, respectively. Moreover, the mean TRE increased by at most 0.96 mm when re-registration was performed ten times. This suggests that our system has sufficient re-registration accuracy for navigation. Therefore, we believe that the developed system will be effective for image-guided surgery.