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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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Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
238

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相关实验视频

Updated: Jun 27, 2025

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
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Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

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在干预计算机断层扫描中任意对比相位生成的时间调节.

Mark A Pinnock1,2, Yipeng Hu1,2, Steve Bandula3,4

  • 1Centre for Medical Image Computing, University College London, London, United Kingdom.

Physics in medicine and biology
|May 2, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的方法,使用时间印的生成对抗网络来创建合成对比增强的CT图像,这些图像来自结缩期间的非对比扫描,改善图像质量并减少辐射暴露.

关键词:
计算机断层扫描 (CT) 是一种计算机断层扫描.对比度增强剂 增强对比度的增强剂卷积神经网络是一种卷积神经网络.深度学习是一种深度学习.干预性放射学是干预性的放射学.

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Author Spotlight: Enhanced Quantification of Cardiovascular Calcification Progression for Longitudinal Micro PET/CT Studies in Small Research Animals
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Author Spotlight: Enhanced Quantification of Cardiovascular Calcification Progression for Longitudinal Micro PET/CT Studies in Small Research Animals

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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

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Author Spotlight: Enhanced Quantification of Cardiovascular Calcification Progression for Longitudinal Micro PET/CT Studies in Small Research Animals
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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
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Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging

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科学领域:

  • 医疗成像医学成像
  • 人工智能在医学中的应用
  • 在瘤学瘤学.

背景情况:

  • 针对癌的最小侵入性切除术提供了诸如低并发症率和更快的恢复等好处.
  • 计算机断层扫描 (CT) 提供了优秀的可视化,但需要含的对比剂,带来风险和增加辐射剂量.
  • 开发无对比成像方法对于干预性放射学至关重要.

研究的目的:

  • 研究使用非对比度CT扫描中的时间信息来合成对比度增强图像.
  • 评估一种新的生成对抗网络 (GAN) 方法,用于在冷却过程中创建这些合成图像.
  • 评估使用时间信息在干预CT中增强对比度的可行性.

主要方法:

  • 提出了一种新的方法,将生成对抗网络 (GAN) 条件化为规范化的时间.
  • 采用超网络架构来生成合成对比增强CT图像.
  • 减少了GAN的受体场,以应对干预CT数据的特定挑战.

主要成果:

  • 与标准生成模型相比,生成了具有竞争力质量的合成对比增强图像.
  • 通过减少受体场,显著提高图像质量和细分性能.
  • 展示了对未见的程序内数据推断的模型稳定性,改善了针头工件可视化.

结论:

  • 具有超级网络的时间条件的GAN为合成对比度增强CT图像提供了一种可行的方法.
  • 减少受感场可以提高图像质量和干预CT下游任务性能.
  • 拟议的方法很好地概括,改善可视化,并可能减少脏冷凝过程中对比剂的依赖.