電腦輔助脊椎手術座標系擬合取點模式與精度提升之研究

STUDY OF SURFACE PROBING STRATEGY FOR IMPROVING THE REGISTRATION ACCURACY IN COMPUTER ASSISTED SPINAL SURGERY

朱怡靜(Yi-Jing Chu) ； 顏炳郎(Ping-Lang Yen) ； 黃孝維(Hsiao-Wei Huang)

《農業機械學刊》 24卷4期 (2015/12) Pp. 1-12

摘要

脊椎融合要求極高的手術精度，手術精度誤差將有極大的風險，因此近年來電腦輔助手術的研究嘗試提供高精度的手術導引，並有不錯的臨床結果，然而電腦輔助手術的精度非常依賴醫療影像與病患座標系擬合（Registration）的精度，本論文探討在座標系擬合過程中，選取脊椎不同區域的取點數目與取點軌跡對準確度的影響，找出各區域中最佳之量測點數，並根據脊椎表面特性之取樣軌跡，獲得比隨機取樣方式更準確的擬合精度。

關鍵字

座標系擬合 ； 電腦輔助手術 ； 脊椎手術

並列摘要

Spinal fusion is a high-risk surgical procedure and requires high accuracy to accomplish its surgical outcome. The current developed computer-assisted surgery has been proven effective for accuracy improvement. However the accuracy of computer-assisted surgery is strongly based on registration that constructs the relationships among patient, image model and the surgical instruments. A large error of registration will result in excessive surgical errors that could cause irreparable results. This study investigated the influence of the amount of sampling points from different regions of vertebral surface region and of the trajectories sampling the points to registration accuracy. The optimal numbers of sampling points on different regions of vertebral surface were observed and analyzed. The sampling trajectories which could produce better registration results were also experimentally verified.

並列關鍵字

Registration ； Computer assisted surgery ； Spine surgery