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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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Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
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数字图像相关联辅助相位敏感光学连贯性断层扫描.

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    此摘要是机器生成的。

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    科学领域:

    • 生物医学光学 生物医学光学
    • 光学计量学 在光学计量学
    • 图像处理 图像处理

    背景情况:

    • 阶段敏感光学连贯性断层扫描 (PhS-OCT) 面临的挑战是相变相关系和有限的横向位移测量.
    • 这些局限性阻碍了对地下变形和结构变化的精确分析.

    研究的目的:

    • 引入一种新的DIC辅助PhS-OCT (DIC-PhS-OCT) 方法.
    • 为了解决相位变相关系,并允许在PhS-OCT中进行横向位移测量.

    主要方法:

    • 采用数字图像相关性 (DIC) 来追踪振幅谱的位移.
    • 使用跟踪位移来纠正超像素偏移的相谱.
    • 集成DIC与PhS-OCT进行增强的位移分析.

    主要成果:

    • 成功地减轻了由轴向和横向位移引起的相位变相关系.
    • 启用获取子像素横向位移测量的功能.
    • 保持了传统PhS-OCT的超高灵敏度特征.

    结论:

    • DIC-PhS-OCT有效地克服了传统PhS-OCT的关键局限性.
    • 该方法提高了光学相干断层扫描中位移测量的精度和范围.
    • 这一进步有可能改善生物医学成像和材料科学应用.