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相关概念视频

Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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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: Jul 8, 2025

Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition
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Strategies for Optimization of Cryogenic Electron Tomography Data Acquisition

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在断层扫描中获得最佳数据采集.

Mahshad Javidan, Hadi Esfandi, Rozalyn Anderson

    Journal of the Optical Society of America. A, Optics, image science, and vision
    |December 12, 2023
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    此摘要是机器生成的。

    本研究介绍了用于最佳断层扫描的算法. 通过选择最有信息的测量,可以提高成像速度和分辨率,同时降低成本和辐射暴露.

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    Using High Resolution Computed Tomography to Visualize the Three Dimensional Structure and Function of Plant Vasculature
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    相关实验视频

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    Using High Resolution Computed Tomography to Visualize the Three Dimensional Structure and Function of Plant Vasculature
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    科学领域:

    • 医疗成像医学成像
    • 计算物理 计算物理
    • 图像重建 图像的重建

    背景情况:

    • 断层扫描从二维投影中重建3D图像.
    • 断层扫描中的测量在信息内容上有所不同.
    • 当前的系统可能并不总是获得最有信息的数据.

    研究的目的:

    • 介绍设计最佳断层扫描测量的数学算法.
    • 为了提高数据采集速度和图像时间分辨率.
    • 为了降低成像中的运营成本和辐射暴露.

    主要方法:

    • 开发用于测量优化的数学算法.
    • 对断层图像投影中的信息内容的分析.
    • 应用到静态和动态对象成像.

    主要成果:

    • 算法允许选择具有最大信息内容的测量.
    • 优化的扫描最大限度地提高了数据采集速度.
    • 实现了更好的时间分辨率和更少的辐射暴露.

    结论:

    • 最佳的测量选择是高效的断层扫描的关键.
    • 拟议的算法为更快,更安全,更具成本效益的3D成像提供了一条途径.
    • 这种方法有利于静态和动态过程的成像.