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Phase Contrast and Differential Interference Contrast Microscopy01:26

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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用于组织成像的高对比手持式FFOCT系统.

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    此摘要是机器生成的。

    我们使用光纤开发了一种新的全场光学连贯性断层扫描 (FFOCT) 系统. 这种先进的成像系统提高了检测灵敏度,并抑制了工件,以便更清晰地可视化微观结构.

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    科学领域:

    • 生物医学光学 生物医学光学
    • 光学成像技术的成像
    • 显微镜的使用方法

    背景情况:

    • 低对比度限制了生物样本中地下微观结构的成像.
    • 传统的光学相干断层扫描系统面临着灵敏度和人工物减少的挑战.

    研究的目的:

    • 引入一种全场光学连贯性断层扫描 (FFOCT) 系统.
    • 为了提高地下微观结构成像的检测灵敏度和图像质量.

    主要方法:

    • 一个使用光纤束和多模光纤探头的新FFOCT系统.
    • 将迈克尔森和菲佐干扰仪集成到一个合结构中.
    • 在里埃域中应用空间过和反向过以减轻文物.

    主要成果:

    • 该系统表现出由于单个光线通过光纤束传播而提高了检测灵敏度.
    • 在面对面的图像中,像素化工件和多重散射效应被显著抑制.
    • 成功获得人手指皮肤和猪食道的深度分辨率面对面图像.

    结论:

    • 开发的FFOCT系统为生物样本成像提供了更好的灵敏度和图像质量.
    • 该系统有效地克服了低对比度和地下微观结构可视化中文物的局限性.
    • 证明了对复杂生物组织的成像能力ex vivo.