A New Heuristic Weighting Function for FDK-based reconstruction of Cone Beam Tomography

摘要：

Cone beam computed tomography (CBCT) represents advanced technique of computer tomography.And FDK is a kind of efficient reconstruction algorithm of CBCT,which suffers density drop artifact in cone angle direction.A new weighting function is proposed to correct the density drop artifact of FDK reconstruction algorithm.The function corrects angle mismatch during the reconstruction plane away from the midplane.3D Shepp-Logan phantom is used to evaluate the new heuristic weighting function.The result shows the new weighting function has obviously inhibitory effect to the density drop artifact,and it also has higher time resolution than other FDK reconstruction algorithm.

关键词： Cone beam computed tomography (CBCT) FDK Heuristic Weighting Function reconstruction density drop artifact

作者: Han Zheng Zikuan Chen Yan Kang Jiren Liu

作者单位: College of Information Science and Engineering of Northeastern University,Shengyang,China Sino-Dutch Biomedical and Information Engineering School of Northeastern University,Shengyang,China Sino-Dutch Biomedical and Information Engineering School of Northeastern University,Shengyang,China; College of Information Science and Engineering of Northeastern University,Shengyang,China;Neusoft Gr

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）