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相关概念视频

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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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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X-ray Imaging01:24

X-ray Imaging

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German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
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相关实验视频

Updated: Jun 6, 2025

High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
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High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue

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在线边缘照明X射线相位对比成像通过面具 misalignment 错位.

Nicholas Francken, Jonathan Sanctorum, Joaquim Sanctorum

    Optics express
    |November 22, 2024
    PubMed
    概括

    这项研究引入了一种新的直线X射线相位对比成像方法. 它可以实现完全对比检索,用于在没有新硬件的情况下对软材料进行工业检查.

    科学领域:

    • 工业X射线成像 工业X射线成像
    • 材料的特性 材料的特性
    • 阶段对比成像 阶段对比成像

    背景情况:

    • 传统的X射线减弱对比度对于软工业材料来说是有限的.
    • 边缘照明 (EI) 提供了增强的对比度,但与直线设置不兼容.
    • 现有的线内EI解决方案损害了对比度检索或需要专门的硬件.

    研究的目的:

    • 开发一个直线边缘照明 (EI) 的X射线成像方法.
    • 为了使所有三个EI对比度 (减弱,差异相,暗场) 在线设置中能够检索.
    • 为了避免当前线内EI技术的局限性,例如限制对比度或新硬件.

    主要方法:

    • 开发了一种用于直线边缘照明 (EI) X射线成像的新方法.
    • 该技术使用数值模拟和实验设置进行了验证.
    • 该方法的设计是为了与标准的线内扫描配置兼容.

    主要成果:

    • 在线配置中成功检索了所有三个边缘照明 (EI) 对比度 (衰减,分相,暗场).
    • 在成像过程中表现出高灵活性和降低噪声的潜力.
    • 通过模拟和实验数据验证了该方法的有效性.

    更多相关视频

    X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
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    X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

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    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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    相关实验视频

    Last Updated: Jun 6, 2025

    High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
    07:48

    High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue

    Published on: September 30, 2022

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    X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging
    08:30

    X-ray Dose Reduction through Adaptive Exposure in Fluoroscopic Imaging

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    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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    结论:

    • 开发的线内EI方法克服了工业检查常规技术的局限性.
    • 它允许使用多个X射线对比度对软材料进行全面的材料表征.
    • 这一进步为线式工业X射线成像提供了一种灵活且独立于硬件的解决方案.