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Preliminary demonstration of flexible dual-energy x-ray phase-contrast imaging

机译：柔性双能X射线相衬成像的初步演示

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摘要

Currently, dual-energy x-ray phase contrast imaging is usually conducted with an x-ray Talbot-Lau interferometer. However, in this system, the two adopted energy spectra have to be chosen carefully in order to match well with the phase grating. For example, the accelerating voltages of the x-ray tube are supposed to be, respectively, set as 40 and 70 kV, with other energy spectra being practically unusable for dual energy imaging. This system thus has low flexibility and maneuverability in practical applications. Here dual energy x-ray phase-contrast imaging is performed in a grating-based noninterferometric imaging system rather than in a Talbot-Lau interferometer. The advantage of this system is that, theoretically speaking, any two separated energy spectra can be utilized to perform dual energy x-ray phase-contrast imaging. The preliminary experimental results show that dual-energy x-ray phase-contrast imaging is successfully performed when the accelerating voltages of the x-ray tube are successively set as 40 and 50 kV. Our work increases the flexibility and maneuverability when employing dual-energy x-ray phase-contrast imaging in medical diagnoses and nondestructive tests.
机译：当前，双能X射线相衬成像通常是用X射线Talbot-Lau干涉仪进行的。但是，在该系统中，必须仔细选择两个采用的能谱，以便与相位光栅很好地匹配。例如，假设X射线管的加速电压分别设置为40 kV和70 kV，而其他能量谱实际上不适用于双能量成像。因此，该系统在实际应用中具有较低的灵活性和可操作性。在这里，双能X射线相衬成像是在基于光栅的非干涉成像系统中而不是在Talbot-Lau干涉仪中进行的。该系统的优点是，从理论上讲，任何两个分离的能谱都可用于执行双能X射线相衬成像。初步的实验结果表明，当将X射线管的加速电压依次设置为40 kV和50 kV时，成功完成了双能X射线相衬成像。当在医学诊断和无损检测中采用双能X射线相衬成像时，我们的工作将增加灵活性和可操作性。

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  • 来源
    《Optical engineering》 |2019年第11期|114105.1-114105.5|共5页
  • 作者

    Shenghao Wang; Guibin Zan; Qiuping Wang; Shijie Liu;

  • 作者单位

    Chinese Academy of Sciences Shanghai Institute of Optics and Fine Mechanics Precision Optical manufacturing and Testing Center Shanghai China;

    University of Science and Technology of China National Synchrotron Radiation Laboratory Hefei China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dual-energy; x-ray; phase contrast; imaging;

    机译：双能X射线相衬影像学;

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