同轴法射线相衬成像的数值模拟技术
Numerical Simulation Method of in Line Phase Contrast Imaging
摘 要
借助于射线传播过程的相位变化特性, 射线相衬成像技术得以发展。该技术可解决传统射线照相技术对于弱吸收材料难以有效成像的不足, 能够得到高对比度的检测图像。同轴法射线相衬成像技术具有结构简单、便于实现的优点。使用一定相干性的射线源产生射线, 穿透物体并在空间自由传播一定距离后经探测器采集, 即可获取到相衬图像。针对同轴法射线相衬成像技术, 阐述了相衬成像的实现原理、成像技术的种类、应用前景, 分析了数值模拟技术的实现方法。
同轴法
数值模拟
Phase contrast imaging
In line method
Numerical simulation
Abstract
With application of phase change during wave propagation in radiographic testing, phase contrast imaging was developed. The difficulties in traditional radiographic testing of weak absorption materials can be overcome by this imaging method, and high contrast image can be obtained. In line phase contrast imaging method is easy to realize: phase contrast image can be acquired after coherent rays penetrated the object and propagated a certain distance in free space. In this paper, principle of in line phase contrast imaging was investigated, classification and application of the imaging technique were summarized, and the numerical simulation method for in line phase contrast imaging was analyzed.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目
收稿日期 2014/4/17
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备注孙朝明(1977-),男,硕士, 高级工程师, 主要从事无损检测工作。
引用该论文: SUN Chao-ming. Numerical Simulation Method of in Line Phase Contrast Imaging[J]. Nondestructive Testing, 2014, 36(12): 2～7
孙朝明. 同轴法射线相衬成像的数值模拟技术[J]. 无损检测, 2014, 36(12): 2～7
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参考文献
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【3】廖延彪.光学原理与应用[M].北京：电子工业出版社, 2006.
【4】陈建文,高鸿奕,李儒新, 等.X射线相衬成像[J].物理学进展, 2005, 225(2):175-794.
【5】POGANY A, GAO D, WILKINS S W. Contrast and resolution in imaging with a microfocus x-ray source[J].Rev.Sci.Instrum,1997,68(7)：2774-2882.
【6】YA.I.NESTERETS, S.W.WILKINS,T.E.GUREYEV, et al. On the optimization of experimental parameters for x-ray in-line phase-contrast imaging[J]. Review of scientific instruments,2005,76：093706-1-093706-16.
【7】(德)玻恩, (美)沃尔夫.光学原理(第七版)[M].北京：电子工业出版社, 2005.
【8】朱佩平, 唐鄂生, 崔明启.同步辐射X光束空间相干性的物理分析[J].光学学报, 1998, 18(2):176-181.
【9】田玉莲,肖体乔,朱佩平, 等.同步辐射X射线位相衬度成像—X射线位相衬度照相术[J]. 核技术, 2004,6(27):417-421.
【10】ALLMAN B E, MCMAHON P J, NUGENT K A, et al. Phase radiography with neutrons[J]. nature, 2000, 408：158-159.
【11】B.ZOOFAN, J.-Y.KIM, S.I.ROKHLIN,et al. Phase-contrast x-ray imaging for nondestructive evaluation of materials[J]. Journal of applied physics, 2006,100：014502-1-014502-7.
【12】KASHYAP Yogesh S, YADAV P S, TUSHARROY, et al. Laboratory-based X-ray phase-contrast imaging technique for material and medical science applications[J]. Applied Radiation and Isotopes,2008(66)：1083-1090.
【13】ATSUSHIMOMOSE. Recent Advances in X-ray Phase Imaging[J], Japanese Journal of Applied Physics, 2005, 44(9A)：6355-6367.
【14】WOONG KI KIM, Young WOO LEE, MOON SUNG CHO,et al. Nondestructive measurement of the coating thickness for simulated TRISO-coated fuel particles by using phase contrast X-ray radiography[J]. Nuclear Engineering and Design, 2008,238：3285-3291.
【15】师绍猛, 陈荣昌, 薛艳玲, 等.激光核聚变靶的X 射线相衬显微成像研究[J].核技术, 2008, 31(7)：524-528.
【16】JOHANN KASTNER, BERNHARD PLANK, GUILLERMO REQUENA. Non-destructive characterisation of polymers and Al-alloys by polychromatic cone-beam phase contrast tomography[J]. Materials characterization,2012,64：79-87.
【17】AUFDERHEIDE M B, HENDERSON G, A.E.Schach von WITTENAU, et al. HADES,A Code for Simulating a Variety of Radiographic Techniques[C]. 2004 Rome IEEE Medical Imaging Conference Electronic Proceedings.
【18】PHILIPPE DUVAUCHELLE, NICOLAS FREUD, VALERIE KAFTANDJIAN,et al. A computer code to simulate X-ray imaging techniques[J]. Nuclear Instruments and Methods in Physics Research,2000,B170：245-258.
【19】PETERZOL A, BERTHIER J, DUVAUCHELLE P, et al. X-ray phase contrast image simulation[J]. Nuclear Instruments and Methods in Physics Research B,2007,254: 307-318.
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