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Proceedings Paper

Projection matrix acquisition for cone-beam computed tomography iterative reconstruction
Author(s): Fuqiang Yang; Dinghua Zhang; Kuidong Huang; Wenlong Shi; Caixin Zhang; Zongzhao Gao
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Paper Abstract

Projection matrix is an essential and time-consuming part in computed tomography (CT) iterative reconstruction. In this article a novel calculation algorithm of three-dimensional (3D) projection matrix is proposed to quickly acquire the matrix for cone-beam CT (CBCT). The CT data needed to be reconstructed is considered as consisting of the three orthogonal sets of equally spaced and parallel planes, rather than the individual voxels. After getting the intersections the rays with the surfaces of the voxels, the coordinate points and vertex is compared to obtain the index value that the ray traversed. Without considering ray-slope to voxel, it just need comparing the position of two points. Finally, the computer simulation is used to verify the effectiveness of the algorithm.

Paper Details

Date Published: 28 February 2017
PDF: 7 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102560J (28 February 2017); doi: 10.1117/12.2269014
Show Author Affiliations
Fuqiang Yang, Northwestern Polytechnical Univ. (China)
Dinghua Zhang, Northwestern Polytechnical Univ. (China)
Kuidong Huang, Northwestern Polytechnical Univ. (China)
Wenlong Shi, Northwestern Polytechnical Univ. (China)
Caixin Zhang, Northwestern Polytechnical Univ. (China)
Zongzhao Gao, Northwestern Polytechnical Univ. (China)


Published in SPIE Proceedings Vol. 10256:
Second International Conference on Photonics and Optical Engineering
Chunmin Zhang; Anand Asundi, Editor(s)

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