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Imaging Biological Samples with Optical Microscopy01:18

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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相关实验视频

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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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选择相机和优化系统参数,以进行光斑对比光学光谱学.

Tom Y Cheng1,2,3, Byungchan Kim1, Bernhard B Zimmermann1

  • 1Department of Biomedical Engineering, Neurophotonics Center, Boston University, Boston, MA, 02215, USA.

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概括

选择合适的摄像头对于精确的斑点对比光学光谱学 (SCOS) 测量脑血流 (CBF) 的测量至关重要. 这项研究指导摄像头的选择和优化,以提高SCOS性能.

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科学领域:

  • 生物医学光学 生物医学光学
  • 神经成像是一种神经成像.
  • 光学仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器

背景情况:

  • 斑点对比光谱学 (SCOS) 是一种基于相机的方法,用于测量脑血流 (CBF).
  • 低光子流量时的摄像头噪声和非理想性可能会降低人类CBF监测中的SCOS准确性.
  • 优化摄像机选择对于推进用于大脑功能监测的光学设备至关重要.

研究的目的:

  • 为 SCOS 测量提供了一份全面的指南,用于描述,选择和优化用于 SCOS 测量的摄像头.
  • 评估商业上可用的摄像机对于基于SCOS的CBF量化准确的适用性.
  • 使用低成本摄像头为SCOS系统建立最佳操作参数.

主要方法:

  • 基于线性,读音噪声和量子化扭曲的三个互补的金属氧化物半导体 (CMOS) 摄像机的评估.
  • 在SCOS中对空间对比度量化的摄像机性能评估.
  • 确定所选相机的最佳操作参数.

主要成果:

  • 不是所有适合一般成像的摄像机都能在SCOS中表现良好,因为在量化空间对比度方面存在挑战.
  • 确定了首选的低成本相机,并确定了其最佳操作参数.
  • 通过使用所选摄像头和优化参数,成功测量了人类CBF.

结论:

  • 在SCOS中建立了相机选择和参数优化的系统指南.
  • 这项工作促进了下一代光学设备的开发,用于监测人类CBF和大脑功能.
  • 这些发现使精确可靠的SCOS测量使用优化,经济高效的摄像机技术.