基于变形模型的心血管三维运动跟踪  

3D tracking of cardiac vessels in angiogram sequences based on deformable model

作　　者：孙正[1] 郁道银[1] 姜浩[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室,天津300072

出　　处：《光电工程》2006年第6期24-27,32,共5页Opto-Electronic Engineering

基　　金：国家自然科学基金项目(30500129);中国博士后科学基金资助项目(2004036361)

摘　　要：提出一种心血管造影图像序列的三维运动跟踪方法。按照自顶向下的方式,采用三维变形模型,通过使适当的能量函数最小,表示血管骨架的曲线直接在三维空间中变形,完成血管骨架序列的三维重建。该方法将序列图像中血管的二维中心线提取、三维重建和运动跟踪集成到一个框架中完成,提高了重建精度和运算速度。An original ＂top-down＂ method for tracking coronary arteries in 3D from X-ray angiogram sequences is proposed. Vascular skeletons are reconstructed through deformable model deforming directly in 3D, Where a proper energy function is minimized. As a result, 2D skeleton extraction, 3D reconstruction and motion tracking are acquired simultaneously. We have applied this method to real angiographic data and results show that it is efficient in improving the accuracy of reconstruction and lowering the computing cost.

关 键 词：冠状动脉造影 变形模型 三维运动跟踪 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] R816.2[自动化与计算机技术—计算机科学与技术]