Refraction Angle and Edge Visibility in X-Ray Diffraction Enhanced Imaging

CHEN Yu; JIA Quan-Jie; LI Gang; WANG Yu-Zhu; XUE Xian-Ying; JIANG Xiao-Ming; CHEN Zhi-Hua; PAN Lin; LI Hong-Yan

Chinese Physics C> 2007, Vol. 31> Issue(10) : 982-989

Refraction Angle and Edge Visibility in X-Ray Diffraction Enhanced Imaging

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China2 China-Japan Friendship Hospital, China-Japan Friendship Institute of Clinical Medical Science,Department of Biochemistry and Molecular Biology, Beijing 100029, China

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Abstract：
Diffraction-enhanced X-ray imaging could extract accurately the refraction angles of the sample, which is very important to increase the image contrast of low Z samples. In this paper, the DEI experiments with X-rays of different energies were performed both on wedge-shaped and rounded model samples. Refraction angles of the two samples were all obtained accurately, and the results agreed well with the calculations. Quantitative analyses based on Edge Visibility were performed for the wedge-shaped model sample. The results revealed that the calculated positions for the Best Edge Visibility of the slope with fixed refraction angle were calculable in good agreement with the experimental results. A quantitative research on the Edge Visibility of real tissues sample was carried out and the optimal condition for best contrast of DEI images were discussed.

References

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CHEN Yu, JIA Quan-Jie, LI Gang, WANG Yu-Zhu, XUE Xian-Ying, JIANG Xiao-Ming, CHEN Zhi-Hua, PAN Lin and LI Hong-Yan. Refraction Angle and Edge Visibility in X-Ray Diffraction Enhanced Imaging[J]. Chinese Physics C, 2007, 31(10): 982-989.

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Received: 2007-01-04
Revised: 2007-03-26

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Refraction Angle and Edge Visibility in X-Ray Diffraction Enhanced Imaging

Corresponding author: JIANG Xiao-Ming,

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China2 China-Japan Friendship Hospital, China-Japan Friendship Institute of Clinical Medical Science,Department of Biochemistry and Molecular Biology, Beijing 100029, China

Received Date: 2007-01-04

Accepted Date: 2007-03-26

Available Online: 2007-10-05

Abstract: Diffraction-enhanced X-ray imaging could extract accurately the refraction angles of the sample, which is very important to increase the image contrast of low Z samples. In this paper, the DEI experiments with X-rays of different energies were performed both on wedge-shaped and rounded model samples. Refraction angles of the two samples were all obtained accurately, and the results agreed well with the calculations. Quantitative analyses based on Edge Visibility were performed for the wedge-shaped model sample. The results revealed that the calculated positions for the Best Edge Visibility of the slope with fixed refraction angle were calculable in good agreement with the experimental results. A quantitative research on the Edge Visibility of real tissues sample was carried out and the optimal condition for best contrast of DEI images were discussed.

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Refraction Angle and Edge Visibility in X-Ray Diffraction Enhanced Imaging

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