基于双平面正交投影重建血管截面的新方法

A New Approach to Reconstruction of Transverse Cross Sections of Arteriae from Biplane Orthogonal Projections

提出了一种利用双平面正交投影重建血管截面的方法。该方法中应用加权距离作为度量相邻截面相似性的测度，并通过对网流理论中最小费用流算法的改进来最优化该相似性测度；在此基础上还引进截面连通性约束，利用随机数来获得最连通截面；实验结果表明应用该方法可以得到在投影约束下与给定模型最相似最连通的截面。

In this paper,a new approach to reconstruction of transverse cross sections of arteries from biplane orthogonal projections is proposed. A weighting distance is defined as measure of resemblance between adjacent slices. The measure of resemblance is optimized by modifying minimum flow approach. The connected constraint of cross sections and the random number are then introduced to obtain most connected cross sections. Experimental results show that 2D slice reconstruction which is of the most resemblance to the guide model and the most connected cross section is obtained under the projection data fidelity constraint using this method.