3D Vessel Tree Reconstruction from Rotational C-arm Projections by Multi-view Stereo Reconstruction

摘要：

In biplane angiography,a three-dimensional (3D) vessel tree can be reconstructed from two-view stereo reconstruction.During an intervention procedure,the rotational C-arm scanning produces a sequence of cone-beam projections (angiograms) that can be used for vessel tracking and vessel tree reconstruction.Since any two projection images can be considered as a two-view pair as captured by a biplane system,a 3D vessel tree can be reconstructed by searching the corresponding points in two projection images followed by two-view stereo reconstruction.The geometry of the 3D tree can be measured in the calibrated Euclidean space.During C-arm angiographic imaging,the contrast bolus flowing through blood vessels may sustain a bolus/blood equilibrium state in the scan field of view,which can be considered as quasi-static or stationary state,the C-arm images can be used for vessel tree reconstruction.In this paper,we propose a vessel tree reconstruction method from C-arm images:1) add epipolar constraint on the search for corresponding points (feature points); 2) apply depth-first search strategy for tree construction from node points and point correspondence; 3) find fundamental and projection matrices for projective reconstruction; 4) reconstruct the 3D tree in Euclidean space with a cube phantom calibration; 5) perform 3D tree measurements (tree segment lengths).Computer simulations and tree phantom experiments under a rotational C-arm system are reported,which justify the method in this paper.

关键词： Rotational C-arm system Stereo reconstruction Point correspondence Projection reconstruction Euclidean reconstruction

作者: Wei Zhang Zikuan Chen Xuefeng Zhang

作者单位: Northeastern University,Sino-Dutch Biomedical and Information Engineering,Shenyang,110004,China;Nort Northeastern University,Sino-Dutch Biomedical and Information Engineering,Shenyang,110004,China Northeastern University,Department of Mathematics,Shenyang,110004,China

会议类型: 国际会议

会议名称: 7th Asian-Pacific Conference on Medical and Biological Engineering(第七届亚太地区生物工程学术会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-04-22（万方平台首次上网日期，不代表论文的发表时间）