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Determination of the optical properties of multilayered phantoms by time-resolved reflectance measurements

机译:通过时间分辨反射率测量确定多层体模的光学性质

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摘要

Diffuse optical imaging of the human brain requires methods to account for the layered structure of the head. In this work we present results of experiments performed on layered phantoms in reflection geometry by a time-resolved technique. We investigate structures with two and three layers with the goal to retrieve the optical properties of the deepest one. Data analysis is based on an existing solution of the time-resolved diffusion equation for a multilayer cylinder. Using a sufficiently large source-detector separation the absorption and reduced scattering coefficients of the deepest layer can be derived from time-resolved reflectance with a deviation of typically not more than 10% from the known values.
机译:人脑的漫射光学成像需要一些方法来说明头部的分层结构。在这项工作中,我们介绍了通过时间分辨技术对反射几何体中的分层体模进行实验的结果。我们研究具有两层和三层的结构,目的是检索最深一层的光学特性。数据分析基于多层圆柱体的时间分辨扩散方程的现有解决方案。使用足够大的源-探测器间隔,可以从时间分辨的反射率得出最深层的吸收系数和减小的散射系数,与已知值的偏差通常不超过10%。

著录项

  • 来源
    《Diffuse optical imaging V》|2015年|95381G.1-95381G.8|共8页
  • 会议地点 Munich(DE)
  • 作者单位

    Centro de Investigaciones en Fisica e Ingenieria del Centro de la Provincia de Buenos Aires (CIFICEN), Pinto 399, B7000GHG, Tandil, Bs. As. - Argentina;

    Centro de Investigaciones en Fisica e Ingenieria del Centro de la Provincia de Buenos Aires (CIFICEN), Pinto 399, B7000GHG, Tandil, Bs. As. - Argentina;

    Centro de Investigaciones en Fisica e Ingenieria del Centro de la Provincia de Buenos Aires (CIFICEN), Pinto 399, B7000GHG, Tandil, Bs. As. - Argentina;

    Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587, Berlin - Germany;

    Physikalisch-Technische Bundesanstalt (PTB), Abbestr. 2-12, 10587, Berlin - Germany;

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

    Turbid media; layered phantoms; inverse problem; reflectance; time-resolved measurements;

    机译:浑浊的介质;分层的幻影;反问题反射率时间分辨的测量;

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