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同轴法射线相衬成像的数值模拟技术

孙朝明

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.
引用本文: 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.
SUN Chao-ming. Numerical Simulation Method of in Line Phase Contrast Imaging[J]. Nondestructive Testing, 2014, 36(12): 2-7.
Citation: SUN Chao-ming. Numerical Simulation Method of in Line Phase Contrast Imaging[J]. Nondestructive Testing, 2014, 36(12): 2-7.

同轴法射线相衬成像的数值模拟技术

详细信息
    作者简介:

    孙朝明(1977-),男,硕士, 高级工程师, 主要从事无损检测工作。

  • 中图分类号: TG115.28

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。
    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.
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出版历程
  • 收稿日期:  2014-04-16

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