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相关概念视频

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

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Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
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Correlative Optical Spectroscopy and Mass Spectrometry Imaging Methodology to Visualise Drug Distribution in a Soft Tissue Section
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使用多通道扩散相关谱的表面层厚度的非侵入性估计.

Saeed Samaei1,2, Daniel Milej1,2, Keith St Lawrence1,2

  • 1Department of Medical Biophysics, Schulich School of Medicine and Dentistry, Western University, 1151 Richmond St., London, N6A 5C1, Canada.

Biomedical optics express
|December 15, 2025
PubMed
概括

这项研究提出了一种使用三通道扩散相关谱法 (DCS) 准确测量表面层厚度和脑血流的新方法,改进了非侵入性监测.

科学领域:

  • 生物医学光学 生物医学光学
  • 医疗成像医学成像
  • 生理监测 生理监测

背景情况:

  • 扩散相关谱法 (DCS) 提供了对大脑血流的非侵入性监测.
  • 脑外组织层可以干扰DCS对大脑组织的敏感性.
  • 准确的分层模型分析需要精确的表面层特性.

研究的目的:

  • 开发和验证一种使用三通道DCS量化表面血液流动动态和厚度的方法.
  • 为了提高大脑 perfusion 测量在表面层存在时的准确性.

主要方法:

  • 使用了三通道DCS测量.
  • 采用模拟和分层幻影实验进行验证.
  • 在短距离的源-探测器距离下调整的光子计数率.

主要成果:

  • 证明了表面层血流指数的准确量化.
  • 成功估计了表面层的厚度.
  • 使用DCS数据启用了下层血流指数的估计.

结论:

  • 这种新的三通道DCS方法有效量化了表面层的特性和潜在的脑血流.

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  • 这种方法提高了非侵入性脑血流监测的准确性和可靠性.