双目视觉技术在前交叉韧带重建手术导航系统中的应用  

Application of binocular vision technology in anterior cruciate ligament surgical navigation system

作　　者：谢劲冰[1] 胡磊[2] 张鹏炜[3] 

机构地区：[1]内蒙古医学院计算机教研室,内蒙古自治区呼和浩特市010059 [2]北京航空航天大学机器人研究所,北京市100191 [3]装甲兵工程学院光电工程室,北京市100072

出　　处：《中国组织工程研究与临床康复》2008年第52期10297-10300,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：北京市科技计划资助项目(H060720050230)~~

摘　　要：针对传统前交叉韧带重建手术中钻孔位置误差较大而导致手术失败的现状,介绍了运用双目立体视觉技术,在C臂透视图像的基础上,合理规划手术,动态辅助医生完成钻孔手术的过程。文中以自主研制的可见光双目视觉定位系统为平台,提出了选用黑白棋盘格标记物简化立体匹配过程的方法。利用标定后的系统对标记物之间的距离进行测量,在距双目视觉传感单元1.5m范围内误差小于1mm。在前交叉韧带重建手术导航实验中的应用表明,该系统具有稳定、可靠、成本低、标定方法简单、匹配准确、定位精度高的特点,能够满足外科手术导航的要求。Based on the failed surgery due to great drilling location errors in rebuilding the knee anterior cruciate ligament, a method was introduced with binocular stereo vision technology rational planning and C-armed X-ray. A new idea that adopts the gridiron pattern marker to simplify the stereo matching process was presented in the self-developed binocular vision positioning system. The calibrated system detected the distance between the pairs of markers which were within 1.5 m distance from the binocular vision sensing units, and the error was less than 1 mm. The application in the anterior cruciate ligament reconstruction surgery shows that the system is stable, reliable, cost-effective, easy-to-calibrate, with sufficient accuracy and high positioning precision, and can meet the requirements of surgical navigation.

关 键 词：前交叉韧带 手术导航 双目视觉 立体匹配 

分 类 号：R318[医药卫生—生物医学工程]