单位：[1]Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China[2]China Japan Friendship Hosp, China Japan Friendship Inst Clin Med Sci, Dept Biochem & Mol Biol, Beijing 100029, Peoples R China
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.
第一作者单位：[1]Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
通讯作者：
推荐引用方式(GB/T 7714)：
Chen Yu,Jia Quan-Jie,Li Gang,等.Refraction angle and edge visibility in X-ray diffraction enhanced imaging[J].HIGH ENERGY PHYSICS and NUCLEAR PHYSICS-CHINESE EDITION.2007,31(10):982-989.
