摘要
为定量分析狭窄血管的长度和选取最佳造影角度,以指导冠心病的介入性治疗,研究了基于两幅冠脉造影图像重建三维冠状动脉树的两种理论方法,即根据透视成像原理推导三维坐标的"最小二乘解"及根据两条异面直线间公垂线的几何性质推导三维坐标的"几何解".比较了这两种重建方法的目标函数,同时讨论了三维重建误差的两种评价方法3D重建误差和2D重建误差.最后利用两幅不同角度的单面冠脉造影图像成功实现了冠状动脉树的三维重建,重建误差统计证明了该三维重建方法的正确性.
The paper describes 3D reconstruction of coronary arterial tree based on two single plane coronary angiograms.Two methods of calculating 3D point are proposed: the least square solution of 3D point based on the theory of perspective projection and the the geometric solution which minimizes the distance to both projective lines.The objective functions of these two methods are compared.The two measures of the reconstruction error, 3D error and 2D error, are defined.The methods are applied to reconstructing 3D coronary arterial tree from two single-plane angiograms,and are validated by the error statistic.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2004年第5期386-391,共6页
Journal of Tianjin University：Science and Technology
基金
高等学校博士学科点专项科研基金资助项目(2003005618).
