| 硬X射线衍射增强峰位成像CT的几何失真纠正方法 |
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| 引用本文： | 孙怡,朱佩平,刘明贺,于健.硬X射线衍射增强峰位成像CT的几何失真纠正方法[J].CT理论与应用研究,2006,15(2):13-21. |
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| 作者姓名： | 孙怡 朱佩平 刘明贺 于健 |
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| 作者单位： | 1. 大连理工大学电信学院,辽宁,大连,116023
2. 中国科学院高能物理研究所,北京,100049 |
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| 摘 要： | 近年来X射线相位衬度成像技术作为一种新的成像方式凭借其空间分辨率高的优势已经成为生物、医学以及材料科学等领域一种新的独具本领的研究工具。本文针对平行束情况下应用相位衬度成像技术得到的放置在胶囊内的苍蝇及蜜蜂投影图片进行重建,对系统几何失真进行了分析和纠正,很好地提高了重建图像的质量,验证了利用目标自身的信息进行自动校正的可行性。
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| 关 键 词： | X-射线 相位衬度成像 几何失真 Hough变换 |
| 文章编号： | 1004-4140（2006）02-0013-09 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005年11月28 |
A Calibration Method for the Misaligned Geometry of Hard X-ray Diffraction Enhanced Top Position Imaging CT |
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| SUN Yi,ZHU Pei-ping,LIU Ming-he,YU Jian.A Calibration Method for the Misaligned Geometry of Hard X-ray Diffraction Enhanced Top Position Imaging CT[J].Computerized Tomography Theory and Applications,2006,15(2):13-21. |
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| Authors: | SUN Yi ZHU Pei-ping LIU Ming-he YU Jian |
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| Institution: | 1. Electronic Institute of Dalian University of Technology, Dalian, Liao Ning 116023,China; 2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049,China. |
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| Abstract: | Recently the technique of phase contrast imaging has become an useful and special tool in biology, material science etc. due to its high resolution. In this paper, we reconstruct the fly in a capsule, calibrate the misaligned geometry by sample information itself. The quality of the CT images is greatly improved and the efficiency of the calibration method is proved. |
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| Keywords: | X-ray phase contrast imaging misaligned geometry Hough transformation |
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