Hauser R, Westermann B, Probst R
Department of Otorhinolaryngology, University of Basel, Kantonsspital, Switzerland.
Laryngoscope. 1997 Apr;107(4):491-9. doi: 10.1097/00005537-199704000-00012.
A noninvasive system designed for patient tracking during image-guided intranasal sinus surgery is described. It is based on optical digitizing with a custom-made registration and reference system, locatable surgical instruments, and a self-localizing operating microscope. Experimental and clinical results reveal a high degree of accuracy for the system. A mean spatial error of 0.82 +/- 0.31 mm was determined for repositioning of the reference system in a plastic model of the skull. For the positioning of the microscope, a mean error of 2.3 +/- 0.83 mm was calculated. Measurements of repositioning accuracy in 24 patients who received surgery for various sinus diseases had a mean spatial error of 1.56 +/- 0.76 mm. The 95% error interval for locating intranasal structures using the surgical instrument was 2.05 mm, and it was 4.92 mm using the microscope. These results suggest that the use of our noninvasive registration and reference system may be effective, accurate, and useful for noninvasive tracking of patient movements in computer-assisted intranasal surgery.
本文描述了一种用于在图像引导鼻内镜鼻窦手术中跟踪患者的非侵入性系统。该系统基于光学数字化技术，配备定制的配准和参考系统、可定位的手术器械以及自定位手术显微镜。实验和临床结果表明该系统具有高度的准确性。在颅骨塑料模型中重新定位参考系统时，平均空间误差为0.82±0.31毫米。对于显微镜的定位，计算出的平均误差为2.3±0.83毫米。对24例因各种鼻窦疾病接受手术的患者进行重新定位准确性测量，平均空间误差为1.56±0.76毫米。使用手术器械定位鼻内结构的95%误差区间为2.05毫米，使用显微镜时为4.92毫米。这些结果表明，我们的非侵入性配准和参考系统的使用可能对计算机辅助鼻内手术中患者运动的非侵入性跟踪有效、准确且有用。
