【作者】 张翼； 宋志坚；

【Author】 Zhang Yi Song zhijian (Digital Medical Research Center,Shanghai 200032)

【机构】 复旦大学数字医学研究中心；

【摘要】 根据脊柱外科手术的特点,提出一种基于 CT 图像三维手术导航的配准新方法,应用点配准与面配准结合的步骤获得了较高的配准精度。同时在面配准中提出一种基于最小外接球树的迭代最近点算法,加快了面配准的速度。经试验证明, 利用上述方法能将配准误差限制在2mm 以内,为精确导航奠定了基础。更多还原

【Abstract】 According to the features of spinal surgery,we proposed a novel image registration method for CT image based image-guided surgery.The method combined of point matching and surface matching has high precision and efficiency.In the surface matching program,we also presented a variant ICP algorithm based on smallest bounding sphere tree.The registration errors are limited in 2mm by applying with this method in the experiment.It demonstrate that our method met with the clinical application standard.更多还原