In IGNS, the processing of surgery is guided by the pre-operation Images .According to the brain deformation existing in IGNS, the error of system is inevitable.

• 对于手术导航系统，采用手术前的影像资料作为整个手术过程的指导，但在手术过程之中，由于脑组织变形所引起的导航误差不可避免。