[Computer-assisted surgical navigation technique].

Abstract

Surgical navigation system is a system that processes medical images by computer graphics and image processing technique, reconstructs 2D or 3D medical image models. It builds a real-time loop among the eyes of doctor, the surgical device and the head of patient by several of space localization technique, so that to realize displaying the localization of surgical devices real-time. The history and research status of surgical navigation system is summarized and the system configuration and the key techniques are expatiated emphatically in this paper. The key techniques include localization in space, image processing and displaying technique, system registration technique and head location technique. At last the progress direction of navigation systems is given.