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NON-DESTRUCTIVE 3D STRUCTURAL STUDIES BY X-RAY MICROTOMOGRAPHY

机译:X射线显微照相术进行非破坏性3D结构研究

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摘要

X-ray microtomography (XMT) is an evolving form of 3D X-ray microscopy that givesrnquantitative information on linear attenuation coefficients at a scale of 2 to 100 mm. The methodrnis non-destructive, so that local changes in microscopic structure can be studied betweenrnsuccessive applications of externally induced changes, e.g. mechanical or chemical processes.rnApplications of our laboratory-based XMT systems are illustrated by studies of biologicalrnmineralized tissues and in materials science. As regards 1st generation XMT systems, the ability tornrecord attenuation spectra of elements with accessible absorption edges is exploited in studies of therningress of KI into calcified tissues. Our novel high definition 4th generation cone-beam XMT scannerrncan image specimens up to 60 mm diameter at resolutions up to 8 μm. Applications include studies ofrnhost response to implants in bone, crack opening as a function of load in compact tensile samplesrnof Al-Li 2090 using an in situ loading stage, and in vitro acid demineralization in whole teeth.
机译:X射线显微断层照相术(XMT)是3D X射线显微术的发展形式,可在2至100 mm的范围内提供有关线性衰减系数的定量信息。该方法是非破坏性的,因此可以在成功地应用外部引起的变化之间,例如微观结构,研究微观结构的局部变化。机械或化学过程。通过对矿化组织和材料科学的研究,说明了基于实验室的XMT系统的应用。对于第一代XMT系统,在KI浸入钙化组织中的研究中,具有记录具有可吸收边缘的元素的衰减谱的能力。我们新颖的第四代高清X射线锥束XMT扫描仪可以以高达8μm的分辨率对直径最大为60 mm的样本进行成像。应用包括研究在原位加载阶段对Al-Li 2090致密拉伸样品中的宿主对骨植入物的反应,裂缝开度与载荷的关系以及在整个牙齿中进行体外酸脱矿。

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  • 来源
  • 会议地点 Steamboat Springs CO(US);Steamboat Springs CO(US);Steamboat Springs CO(US)
  • 作者单位

    Dental Biophysics, Queen Mary, University of London, Mile End Road, London E1 4NS, UK;

    rnDental Biophysics, Queen Mary, University of London, Mile End Road, London E1 4NS, UK;

    rnDental Biophysics, Queen Mary, University of London, Mile End Road, London E1 4NS, UK;

    rnDental Biophysics, Queen Mary, University of London, Mile End Road, London E1 4NS, UK;

    rnDental Biophysics, Queen Mary, University of London, Mile End Road, London E1 4NS, UK;

    rnDept. Anatomy Developmental Biology, University College, Gower Street, London WC1E 6BT, UK;

    rnRoyal Veterinary College, Royal College Street, London NW1 0TU;

    rnSchool of Materials Science Engineering, Georgia Institute of Technology, Atlanta, Ga 30332-0245;

    rnSchool of Materials Science Engineering, Georgia Institute of Technology, Atlanta, Ga 30332-0245;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 X射线、紫外线、红外线;
  • 关键词

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