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相关概念视频

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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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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相关实验视频

Updated: Jun 16, 2025

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution

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用波断层扫描进行三维物体成像.

Kang Liu, Hongyan Liu, Shuangxun Li

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    此摘要是机器生成的。

    一个新的断层扫描波雷达使用轨道角动量 (OAM) 波进行3D成像. 这项技术重建了射程,近距离和高度的目标信息,提供超高分辨率成像.

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    High-speed Particle Image Velocimetry Near Surfaces
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    Longitudinal Morphological and Physiological Monitoring of Three-dimensional Tumor Spheroids Using Optical Coherence Tomography
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    Longitudinal Morphological and Physiological Monitoring of Three-dimensional Tumor Spheroids Using Optical Coherence Tomography

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    相关实验视频

    Last Updated: Jun 16, 2025

    Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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    Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution

    Published on: August 16, 2012

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    High-speed Particle Image Velocimetry Near Surfaces
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    High-speed Particle Image Velocimetry Near Surfaces

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    Longitudinal Morphological and Physiological Monitoring of Three-dimensional Tumor Spheroids Using Optical Coherence Tomography
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    Longitudinal Morphological and Physiological Monitoring of Three-dimensional Tumor Spheroids Using Optical Coherence Tomography

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    科学领域:

    • 电磁学和波浪物理 电磁学和波浪物理
    • 雷达系统工程 雷达系统工程
    • 计算成像技术的成像

    背景情况:

    • 带有轨道角动量 (OAM) 的旋电磁 (EM) 波为对象成像提供了一种新的方法.
    • 利用OAM指数和亚齐木图角关系,可以重建对象的亚齐木图形状.

    研究的目的:

    • 提出一个断层影像波雷达系统用于三维 (3D) 目标信息重建.
    • 开发3D成像算法,以确定目标位置的距离,近距离和高度.

    主要方法:

    • 使用信号带宽,OAM自由度和断层扫描技术.
    • 分析波强度和波面分布,构建一个3D成像模型.
    • 开发一种2D成像方法,以减轻贝塞尔函数调制效应.

    主要成果:

    • 在各种高度角度对多个目标展示了强大的3D成像性能.
    • 在阿齐木斯维度实现超分辨率.
    • 结果显示与理论分析有很好的一致性.

    结论:

    • 拟议的断层扫描波雷达推进了3D成像技术.
    • 这种方法使得高效的3D目标重建,用着照明的方法.
    • 该技术提供了强大的超分辨率成像能力.