| X光透镜在同轴X光位相成像中的应用 |
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| 引用本文： | 李颖,丁训良,孙天希,潘秋丽,林晓燕,王治红.X光透镜在同轴X光位相成像中的应用[J].北京师范大学学报(自然科学版),2005,41(5):488-491. |
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| 作者姓名： | 李颖 丁训良 孙天希 潘秋丽 林晓燕 王治红 |
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| 作者单位： | 北京师范大学射线束技术与材料改性教育部重点实验室,低能核物理研究所,北京市辐射中心,100875,北京 |
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| 摘 要： | 介绍了同轴X光位相成像的基本原理,说明了位相成像与普通吸收成像的区别;初步研究了X光透镜在位相衬度成像中的应用,利用整体会聚X光透镜将大焦斑光源汇聚为微焦斑,从而使出射的X光满足位相衬度成像所需的空间相干条件,得到了较好的实验结果,为进一步研究X光透镜在该领域的应用打下了基础.
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| 关 键 词： | X光透镜 位相成像 空间相干 微焦斑X光源 |
| 收稿时间： | 2005-03-22 |
| 修稿时间： | 2005年3月22日 |
THE APPLICATION OF MONOLITHIC POLYCAPILLARY X-RAY LENS TO IN-LINE X-RAY PHASE IMAGING |
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| Li Ying,Ding Xunliang,Sun Tianxi,Pan Qiuli,Lin Xiaoyan,Wang Zhihong.THE APPLICATION OF MONOLITHIC POLYCAPILLARY X-RAY LENS TO IN-LINE X-RAY PHASE IMAGING[J].Journal of Beijing Normal University(Natural Science),2005,41(5):488-491. |
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| Authors: | Li Ying Ding Xunliang Sun Tianxi Pan Qiuli Lin Xiaoyan Wang Zhihong |
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| Abstract: | The theory of in-line phase contrast imaging is applied and the differences between phasecontrast imaging and absorb-contrast imaging are introduced. An experimental study of the application of monolithic polycapillary X-ray lens to in-line X-ray phase-contrast imaging is performed and the results are positive. Using the monolithic polycapillary X-ray lens makes the source size become micro-focus and get good enough special coherence. The new technique provides the advantage to obtain the radiographs of large sample in an acceptable exposure time with general X-ray tube, which is very important to clinical applications. The experiment makes a base for the research on the application of the monolithic polycapillary X-ray lens to radiographs. |
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| Keywords: | polycapillary X-ray lens phase-contrast imaging special coherence micro-focus X-ray source |
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