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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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Super-resolution Fluorescence Microscopy01:37

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Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
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相关实验视频

Updated: Jun 29, 2025

Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
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Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

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高分辨率的细胞成像使用白光相位移干扰测量和代相位解密的白光相位移干扰测量.

Shubham Tiwari1,2, Shilpa Tayal2, Shivam Trivedi2

  • 1SeNSE, Indian Institute of Technology Delhi, New Delhi, India.

Journal of biophotonics
|April 3, 2024
PubMed
概括

一个新的优化算法提高了定量相位成像 (QPI) 的分辨率和精度. 这种方法揭示了细菌中的亚细胞结构,提供了宝贵的生物学见解.

关键词:
细胞成像细胞成像有约束的优化优化.解体解体是一种解体.阶段转移干扰测试的相位转移干扰测试定量阶段成像成像技术白色的灯光白色的灯光

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Super-resolution Imaging of the Bacterial Division Machinery
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相关实验视频

Last Updated: Jun 29, 2025

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Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

Published on: February 23, 2018

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Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
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科学领域:

  • 光学和光子学 在光学和光子学.
  • 生物物理学的生物物理.
  • 计算成像技术的成像

背景情况:

  • 定量阶段成像 (QPI) 对于无标签细胞可视化至关重要.
  • 现有的QPI方法往往在分辨率和对比度方面面临限制.
  • 解卷算法对于提高QPI中的图像质量至关重要.

研究的目的:

  • 开发和验证QPI.deconvolution的优化算法.
  • 为了提高相位图恢复的分辨率和准确性.
  • 在生物样本上证明算法的有效性.

主要方法:

  • 一个使用复杂梯度运算符进行解卷的受约束优化问题.
  • 该算法应用于基于白光的相位移干扰计 (WLPSI).
  • 在模拟和现实世界对象上进行测试,包括大肠杆菌.

主要成果:

  • 观察到分辨率和对比度的显著改善.
  • 在大肠杆菌中,以前看不见的亚细胞结构得到了解决.
  • 该算法成功恢复了高分辨率的相位图.

结论:

  • 提出的优化算法有效地提高了QPI性能.
  • 它可以可视化细微的生物结构,帮助细胞功能研究.
  • 该算法很容易实现,并且可以适应各种QPI技术.