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Thomson scattering X-ray source: a novel tool for monochromatic computed tomography

机译：汤姆森散射X射线源：用于单色计算机断层扫描的新型工具

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摘要

Based on the collision of intense laser and relativistic electrons, a Thomson scattering X-ray source can produce quasi-monochromatic X-ray pulses with high brightness in tens of keV or even higher energy regime, which can eliminate the beam hardening effect encountered in computed tomography (CT) by using polychromatic X-rays generated through Bremsstrahlung and make it possible to relate the reconstructed linear attenuation coefficients to the composition of a material. In this paper, we demonstrate the capacity of quantitative CT measurement based on the Tsinghua Thomson scattering X-ray source (TTX) and the potential of anatomical segmentation using quantitative linear attenuation coefficient analysis. A peanut sample (Arachis hypogaea L.) was selected for this study. According to the reconstructed CT image, all anatomical structures except for the testa (the seed coat) of peanut were identified clearly in terms of the shape and size, and the reconstructed linear attenuation coefficients of cotyledon show high similarities with the theoretical value. After quantitative analysis of the reconstructed linear attenuation coefficients, the hull can be peeled off the core at the threshold of 0.31 cm~(-1). Our results pave the way toward fundamental researches and practical applications based on quantitative CT at the TTX.
机译：基于强激光和相对论电子的碰撞，汤姆森散射X射线源可以产生具有几十keV甚至更高能量范围的高亮度的准单色X射线脉冲，从而可以消除计算中遇到的束硬化效应通过使用Bre致辐射产生的多色X射线断层扫描（CT），可以将重建的线性衰减系数与材料的成分相关联。在本文中，我们展示了基于清华汤姆森散射X射线源（TTX）的定量CT测量的能力以及使用定量线性衰减系数分析进行解剖分割的潜力。本研究选择了花生样品（Arachis hypogaea L.）。根据重建的CT图像，可以从形状和大小方面清楚地识别出花生的种皮（种皮）以外的所有解剖结构，并且重建的子叶的线性衰减系数与理论值具有高度相似性。对重建的线性衰减系数进行定量分析后，可以在0.31 cm〜（-1）的阈值下将船体从核心上剥离。我们的研究结果为在TTX上基于定量CT的基础研究和实际应用铺平了道路。

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  • 来源
    《Developments in X-ray tomography XI》|2017年|103910Z.1-103910Z.9|共9页
  • 会议地点 San Diego(US)
  • 作者

    Zhijun Chi; Yingchao Du; Lixin Yan; Zheng Zhou; Zhen Zhang; Dong Wang; Qili Tian; Hongze Zhang; Jianfei Hua; Jiaru Shi; Wenhui Huang; Huaibi Chen; Chuanxiang Tang;

  • 作者单位

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

    Accelerator laboratory, Department of engineering physics, Tsinghua University, Beijing100084, China Key laboratory of particle : radiation imaging (Tsinghua University), Ministry of Education,Beijing 100084, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Thomson scattering; monochromatic CT; attenuation coefficient; peanut;

    机译：汤姆森散射；单色CT衰减系数花生;

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