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Tomography with energy dispersive diffraction

机译：断层扫描与能量色散衍射

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摘要

X-ray diffraction can be used as the signal for tomographic reconstruction and provides a cross-sectional map of the crystallographic phases and related quantities. Diffraction tomography has been developed over the last decade using monochromatic x-radiation and an area detector. This paper reports tomographic reconstruction with polychromatic radiation and an energy sensitive detector array. The energy dispersive diffraction (EDD) geometry, the instrumentation and the reconstruction process are described and related to the expected resolution. Results of EDD tomography are presented for two samples containing hydroxyapatite (hAp). The first is a 3D-printed sample with an elliptical cross-section and contains synthetic hAp. The second is a human second metacarpal bone from the Roman-era cemetery at Ancaster, UK and contains bio-hAp which may have been altered by diagenesis. Reconstructions with different diffraction peaks are compared. Prospects for future EDD tomography are also discussed.
机译：X射线衍射可以用作层析重建的信号，并提供结晶相和相关数量的横截面图。在过去的十年中，已经使用单色X射线和区域检测器开发了衍射层析成像技术。本文报道了利用多色辐射和能量敏感探测器阵列进行的层析成像重建。描述了能量色散衍射（EDD）的几何形状，仪器和重建过程，并与预期的分辨率相关。提供了两个含有羟基磷灰石（hAp）样品的EDD断层扫描结果。第一个是带有椭圆形横截面的3D打印样品，其中包含合成的hAp。第二个是人类的第二个掌骨，来自英国安卡斯特的罗马时代公墓，其中含有生物hAp，可能已被成岩作用改变。比较了具有不同衍射峰的重建。还讨论了未来EDD层析成像的前景。

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  • 来源
    《Developments in X-ray tomography XI》|2017年|103910A.1-103910A.8|共8页
  • 会议地点 San Diego(US)
  • 作者

    S.R. Stock; J.S. Okasinski; R. Woods; J. Baldwin; T. Madden; O. Quaranta; A. Rumaiz; T. Kuczewski; J. Mead; T. Krings; P. Siddons; A. Miceli; J.D. Aimer;

  • 作者单位

    Dept. of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA;

    Photon Sciences, Brookhaven National Laboratory, Brookhaven, NY, USA;

    Photon Sciences, Brookhaven National Laboratory, Brookhaven, NY, USA;

    Photon Sciences, Brookhaven National Laboratory, Brookhaven, NY, USA;

    Semikon Detector GmbH, Juelich, Germany;

    Photon Sciences, Brookhaven National Laboratory, Brookhaven, NY, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA;

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

    x-ray diffraction; energy dispersive diffraction; tomography; diffraction tomography; hydroxyapatite; bone;

    机译：X射线衍射;能量色散衍射断层扫描衍射层析成像羟基磷灰石骨;

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