医学图像配准在手术导航中的应用

Application of Medical Image Registration in Surgery Guide

目的:针对外科手术导航中的需求,研究实现了二维医学图像和三维体数据的配准。方法:利用DRR模拟图像与真实图像比较,互信息量作为目标函数,参数寻优采用Powell算法,实现2D￣3D医学图像的刚性配准。结果:配准误差在0.1￣5度之间。结论:DRR图像影响配准精度,误差难以避免。

Objective： Accroding to the requirement of surgery guide,the authors research and actualize registration of 2D～3D medical image. Method： We used DRR to compare with real image,mutual-information as object function, Powell algorithm as parameter optimization to implemente rigid registration of 2D～3D medical image. Results： Registration error between 0.1～5 degree. Conclusion： DRR image influence registration precision,and error can＇t be eliminated absolutely.