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Proceedings Paper

Thomson scattering x-ray source: a novel tool for monochromatic computed tomography
Author(s): Zhijun Chi; Yingchao Du; Lixin Yan; Zheng Zhou; Zhen Zhang; Dong Wang; Qili Tian; Hongze Zhang; Jianfei Hua; Jiaru Shi; Wenhui Huang; Huaibi Chen; Chuanxiang Tang
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Paper Abstract

Based on the collision of intense laser and relativistic electrons, a Thomson scattering x-ray source can produce quasi-monochromatic x-ray pulses with high brightness in the tens keV or even higher energy regime, which can eliminate the beam hardening effect encountered in computed tomography (CT) by using polychromatic x-rays generated through Bremsstrahlung and make it possible to relate the reconstructed linear attenuation coefficients to the composition of a material. In this paper, we demonstrate the capacity of quantitative CT measurement based on Tsinghua Thomson scattering X-ray source (TTX) and the potential of anatomical segmentation using quantitative linear attenuation coefficient analysis. A peanut sample (Arachis hypogaea L.) was chosen for this study. According to the reconstructed CT image, all anatomical structures except for the testa (i.e. the seed coat) of peanut were identified clearly in terms of the shape and size, and there were high similarities between reconstructed linear attenuation coefficients of cotyledon and its theoretical values. After quantitative analysis of the reconstructed linear attenuation coefficients, the hull can be peeled off the core at the threshold of 0.31 cm-1. Our results pave the way towards fundamental researches and practical applications based on quantitative CT at TTX.

Paper Details

Date Published: 19 September 2017
PDF: 9 pages
Proc. SPIE 10391, Developments in X-Ray Tomography XI, 103910Z (19 September 2017); doi: 10.1117/12.2273136
Show Author Affiliations
Zhijun Chi, Tsinghua Univ. (China)
Yingchao Du, Tsinghua Univ. (China)
Lixin Yan, Tsinghua Univ. (China)
Zheng Zhou, Tsinghua Univ. (China)
Zhen Zhang, Tsinghua Univ. (China)
Dong Wang, Tsinghua Univ. (China)
Qili Tian, Tsinghua Univ. (China)
Hongze Zhang, Tsinghua Univ. (China)
Jianfei Hua, Tsinghua Univ. (China)
Jiaru Shi, Tsinghua Univ. (China)
Wenhui Huang, Tsinghua Univ. (China)
Huaibi Chen, Tsinghua Univ. (China)
Chuanxiang Tang, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 10391:
Developments in X-Ray Tomography XI
Bert Müller; Ge Wang, Editor(s)

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