摘要
本文根据心血管的树状结构特征,提出了一种新颖的拓扑匹配方法。该方法很好地解决了心血管三维重建中血管段的准确配准问题。此方法采用二叉树描述心血管树的拓扑结构,根据外极线约束和拓扑约束,沿血管行走方向逐级匹配分支点和端点,从而实现血管段的自动匹配。实验结果表明,该方法可以有效地提高血管匹配的准确性,从而降低了心血管三维重建的复杂度。
This paper presents a novel matching method of vessels in 3D reconstruction of heart vessel.The directed binary tree was used to describe the topological structure of heart vessel tree＇s skeleton.Based on topological property and epipolar property,the branch-points and end-points of each branch level could be automatically matched along the direction of blood stream.Thereupon it is easy to couple the corresponding vessels segments of two angiograms projected in different directions.The 3D heart vessel tree was successfully reconstructed from clinic coronary angiograms,which validates the presented method.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2011年第1期153-156,162,共5页
Journal of Biomedical Engineering
关键词
三维重建
拓扑匹配
心血管
造影图像
3D reconstruction
Topological match
Heart vessel
Angiogram
