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相关概念视频

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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Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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相关实验视频

Updated: Jan 7, 2026

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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桌面脉冲X射线幽灵成像,使用单像素探测器.

Hui Zeng1,2, Ming-Yang Zhu1,2, Xi-Chen Hu1,2

  • 1State Key Laboratory of Dark Matter Physics, Key Laboratory for Laser Plasmas (MoE), School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.

The Review of scientific instruments
|December 30, 2025
PubMed
概括
此摘要是机器生成的。

这项研究展示了使用高灵敏度探测器和快门的实用X射线幽灵成像 (XGI),显著减少曝光时间到5毫秒. 这一突破使得低辐射剂量成像具有医疗XGI摄像机的潜力.

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Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography
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Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography

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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera

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相关实验视频

Last Updated: Jan 7, 2026

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

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Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography
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Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography

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Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
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科学领域:

  • 物理 物理学 物理
  • 光学是什么?光学是什么?光学是什么?
  • 医疗成像医学成像

背景情况:

  • 幽灵成像已经取得了显著的进步,但由于技术上的挑战,X射线幽灵成像 (XGI) 仍未得到充分发展.
  • XGI的一个关键好处是,它具有降低辐射强度的成像潜力.
  • 之前的XGI实验遭受了长时间采样,增加了辐射剂量.

研究的目的:

  • 为了证明XGI的概念验证,减少曝光时间.
  • 为了研究低辐射剂量XGI.GI的可行性.
  • 为开发医疗XGI摄像机提供参考数据.

主要方法:

  • 使用高灵敏度单像素探测器和桌面X射线源.
  • 采用可调节的机械快门来控制曝光时间.
  • 检查了X射线管流,采样频率和曝光时间对图像质量的影响.

主要成果:

  • 实现了空间分辨率为100微米的成像.
  • 将总暴露时间缩短到5 ms.
  • 在低辐射剂量下证明成功成像.

结论:

  • 提出了一种实现低辐射剂量XGI.GI的实用方法.
  • 与以前的方法相比,开发的技术显著缩短了采样时间.
  • 这些发现为未来的医学XGI摄像机开发提供了宝贵的见解.