Strip-based parallel beam projection model for under-sampling CT system

Shuang Zhang; Jinbang Wang; Hanxue Mei; Peng Zhou; Kai Pan; Zhiguo Liu; Yude Li; Tianxi Sun

doi:10.1117/12.2522039

24 January 2019 Strip-based parallel beam projection model for under-sampling CT system

Shuang Zhang, Jinbang Wang, Hanxue Mei, Peng Zhou, Kai Pan, Zhiguo Liu, Yude Li, Tianxi Sun

Proceedings Volume 11052, Third International Conference on Photonics and Optical Engineering; 110521C (2019) https://doi.org/10.1117/12.2522039
Event: The International Conference on Photonics and Optical Engineering, 2018, Xi'an, China

Abstract

X ray CT is a vital technology for inspecting the internal structure of some objects. Various computing method models have been used to CT reconstruction. When image of the scanned object is recorded by the detector unit of finite area, the strip-based projection model is more suitable. In this paper, a simultaneous algebraic reconstruction technique (SART) for strip-based parallel beam projection model have been adopted. Furthermore, in order to reduce the radiation dose and avoid the blurring effect resulting from changes in physical and chemical properties of specimens during scanning, it is necessary to reduce the number of step-scanning. This algorithm combined with cubic spline interpolation can reconstruct high quality CT images in a small amount of data projection in numerical simulation.

Citation Download Citation

Shuang Zhang, Jinbang Wang, Hanxue Mei, Peng Zhou, Kai Pan, Zhiguo Liu, Yude Li, and Tianxi Sun "Strip-based parallel beam projection model for under-sampling CT system", Proc. SPIE 11052, Third International Conference on Photonics and Optical Engineering, 110521C (24 January 2019); https://doi.org/10.1117/12.2522039

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