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相关概念视频

Computed Tomography01:10

Computed Tomography

7.9K
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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Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

257
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
257
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

2.8K
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...
2.8K

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相关实验视频

Updated: Jan 8, 2026

3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography
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3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography

Published on: October 24, 2019

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基于面板式工业组件的扩散模型 (iDM) 的代有限角度计算机断层扫描重建方法.

Dimeng Xia, Zhizhong Ran, Huanjie Tao

    Optics express
    |December 19, 2025
    PubMed
    概括

    本研究介绍了一种代扩散模型方法 (iDM),用于减少工业电子有限角度计算机断层扫描 (CT) 中的工件. 该iDM方法实现高质量的CT图像与更少的代,改善重建质量.

    科学领域:

    • 医疗成像医学成像
    • 计算成像技术的成像
    • 材料科学 材料科学 材料科学

    背景情况:

    • 有限角计算断层扫描 (CT) 对于检查工业电子组件至关重要.
    • 有限角度CT重建中的工件降低了图像质量,需要先进的解决方案.
    • 现有的代方法难以平衡重建质量和代数量.

    研究的目的:

    • 开发一种新的代重建方法,以减少有限角度CT中的文物.
    • 提高工业电子包装组件CT图像的质量.
    • 以更少的代实现高质量的重建.

    主要方法:

    • 提出了一种基于扩散模型 (iDM) 的代重建方法.
    • 构建了一个优化模型,在可见边界上利用准确的梯度和灰色值.
    • 结合时间步进技术与边界信息来解决热扩散方程.

    主要成果:

    • 该iDM方法有效地减少了有限角度的工件.
    • 使用拟议的方法获得了高质量的CT图像.
    • 通过少量代,可以实现显著的文物减少.

    结论:

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    • 对于有限角度CT重建的挑战,iDM方法提供了一个有前途的解决方案.
    • 这种方法提高了图像质量,并减少了工业CT应用中的工件.
    • 该方法通过要求更少的代来显著减少人工制造物的效率来证明效率.