ISSN 1004-4140
CN 11-3017/P

考虑实际投影成像平面位置的扇束滤波反投影(FFBP)算法

裴晓东, 张全红

裴晓东, 张全红. 考虑实际投影成像平面位置的扇束滤波反投影(FFBP)算法[J]. CT理论与应用研究, 2005, 14(3): 18-23.
引用本文: 裴晓东, 张全红. 考虑实际投影成像平面位置的扇束滤波反投影(FFBP)算法[J]. CT理论与应用研究, 2005, 14(3): 18-23.
PEI Xiao-dong, ZHANG Quan-hong. Fan-beam Filtered Back-projection (FFBP) Algorithm Considering Practical Place of Projection Imaging Plane[J]. CT Theory and Applications, 2005, 14(3): 18-23.
Citation: PEI Xiao-dong, ZHANG Quan-hong. Fan-beam Filtered Back-projection (FFBP) Algorithm Considering Practical Place of Projection Imaging Plane[J]. CT Theory and Applications, 2005, 14(3): 18-23.

考虑实际投影成像平面位置的扇束滤波反投影(FFBP)算法

详细信息
    作者简介:

    裴晓东(1973-),男,西安电子科技大学电工程学院硕士研究生,从事计算机监控的实验研究工作。

  • 中图分类号: TP391.5

Fan-beam Filtered Back-projection (FFBP) Algorithm Considering Practical Place of Projection Imaging Plane

  • 摘要: 扇束滤波反投影(Fan-beam Filtered Back Projection-FFBP)算法理论公式中,投影成像平面位于旋转中心;而实际CT扫描系统中,投影成像平面与旋转中心都存在一定距离。考虑到实际投影成像平面位置,本文推导了它的FFBP算法(即IFFBP-Improved Fan-beam Filtered Back Projection算法),比较了此两种情况下(即忽略成像平面与旋转中心距离)FFBP、IFFBP算法重建质量。计算机模拟和实验结果证明了IFFBP算法的正确性。
    Abstract: In the theoretic formula of fan-beam filtered back projection (FFBP) algorithm, the projection imaging plane lies on the center of rotation, but in practical CT scan system, it keeps the center at a distance. With respect to this problem, this paper proposes an improved fan-beam filtered back projection (IFFBP) algorithm, and compares reconstruction quality of FFBP with IFFBP. The results of computer simulation and experiment validate IFFBP algorithm.
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出版历程
  • 收稿日期:  2005-05-17
  • 网络出版日期:  2022-12-28

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