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相关概念视频

Computed Tomography01:10

Computed Tomography

4.6K
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

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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...
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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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Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT

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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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相关实验视频

Updated: Jul 24, 2025

Simultaneous Brightfield, Fluorescence, and Optical Coherence Tomographic Imaging of Contracting Cardiac Trabeculae Ex Vivo
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Simultaneous Brightfield, Fluorescence, and Optical Coherence Tomographic Imaging of Contracting Cardiac Trabeculae Ex Vivo

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使用高级分数函数 (ADSF) 进行断层图像重建.

Wenxiang Cong1, Wenjun Xia1, Ge Wang1

  • 1Biomedical Imaging Center, Center for Computational Innovations, Center for Biotechnology and Interdisciplinary Studies, Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180.

ArXiv
|July 3, 2023
PubMed
概括
此摘要是机器生成的。

本研究引入了用于计算机断层扫描 (CT) 图像重建的高级分数函数 (ADSF). 这种基于深度学习的新方法显著减少了低剂量CT扫描中的噪音和人工物.

关键词:
计算机断层扫描 (CT) 扫描高斯混合物模型模型的高斯混合物模型.深度学习是一种深度学习.图像重建 图像重建后期最大估计 (MAP) 的估计.减少辐射剂量的减少.分数函数的分数函数是指分数函数.

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Using Synchrotron Radiation Microtomography to Investigate Multi-scale Three-dimensional Microelectronic Packages
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相关实验视频

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科学领域:

  • 医疗成像医学成像
  • 计算成像技术的成像
  • 人工智能的人工智能

背景情况:

  • 从有限的X射线投影数据 (低剂量或稀疏视图) 进行计算机断层扫描 (CT) 图像重建,通常会导致显著的噪音和文物.
  • 经典的重建算法在这些具有挑战性的获取条件下努力生产高质量的图像.
  • 后期最大估计 (MAP) 为整合图像先验提供了一个框架,以提高重建质量.

研究的目的:

  • 开发一种新的代图像重建方法,以提高CT图像质量.
  • 通过深度学习和高斯混合模型引入一个高级分数函数 (ADSF).
  • 在CT重建中增强揭示和消除模糊的功能.

主要方法:

  • 开发了一种基于MAP估计的新代图像重建方法.
  • 利用深度学习和高斯混合模型来导出高级分数函数 (ADSF).
  • 将ADSF集成到一个代重建算法中,并用数学证明了它的融合.

主要成果:

  • 与最先进的技术相比,ADSF的代重建方法显示出更高的无雾化和消除模糊性.
  • 在公共医学图像数据集和临床原始CT数据集上评估性能.
  • 展示了ADSF重建方法的优秀通用性和稳定性.

结论:

  • 拟议的ADSF代重建方法为低剂量和稀疏视图CT提供了增强的图像质量.
  • 该方法在不同数据集中展示了出色的概括性和稳定性.
  • 这种基于深度学习的方法代表了医学图像重建技术的重大进步.