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Proceedings Paper

A family of analytic algorithms for cone-beam CT
Author(s): Shiying Zhao; Hengyong Yu; Ge Wang
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Paper Abstract

In this article, we unify several recently developed analytic algorithms for spiral cone-beam computed tomography (CT), including both the filtered-backprojection algorithm and the backprojected-filtration algorithms in the cases of standard spiral, nonstandard spiral, and more general scanning loci. Using Tuy's inversion scheme, we give concise proofs of these reconstruction formulas for cone-beam CT. While a similar proof of the Katsevich algorithm was previously reported, our proof of the Zou-Pan algorithm is new. More importantly, our formulation is generally valid for nonstandard spiral loci and other curves, in agreement with another paper from our group. Furthermore, two sets of simulation results are presented, showing both filtered-backprojection reconstruction using asymmetric filtering lines and backprojected-filtration reconstruction using a saddle curve.

Paper Details

Date Published: 26 October 2004
PDF: 11 pages
Proc. SPIE 5535, Developments in X-Ray Tomography IV, (26 October 2004); doi: 10.1117/12.560242
Show Author Affiliations
Shiying Zhao, Univ. of Iowa (United States)
Hengyong Yu, Univ. of Iowa (United States)
Hangzhou Dianzi Univ. (China)
Ge Wang, Univ. of Iowa (United States)

Published in SPIE Proceedings Vol. 5535:
Developments in X-Ray Tomography IV
Ulrich Bonse, Editor(s)

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