Improved FDK Algorithm (I-FDK) Considering Practical Place of Projection Imaging Plane

摘要：

The classic Cone-Beam Reconstruction (FDK) Algorithm which reconstruct three- dimensional image of object is based on fan-beam filtered back projection (FFBP) algorithm. Thus, in the theoretic formula of FFBP, the projection imaging plane is moved to the center of rotation(ignore the distance of the projection imaging plane to the center of rotation ).For this reason, the reconstruction image dimension is magnified while modulus decay decreased when use FDK algorithm. Consider of this problem, our studies focus on the real place of projection imaging plane, proposes the Improved FDK algorithm. Then, we compares reconstruction quality of two different algorithms. The results of computer simulation show I-FDK is accurate with better quality of ct image.

关键词： cone-beam reconstruction filtered back projection algorithm projection imaging plane.1

作者: WEI Dongbo XU Haijun LI Dan TANG Qibo

作者单位: School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics Beijing, 100083 China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）