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相关概念视频

Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

30
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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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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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...
4.6K
Imaging Studies I: CT and MRI01:14

Imaging Studies I: CT and MRI

309
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...
309
Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

37
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
37
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

65
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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相关实验视频

Updated: Jul 28, 2025

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
02:09

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function

Published on: April 12, 2024

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基于Y-Net3的多对比MRI的加速图像重建.

Xin Cai1, Xuewen Hou2, Rong Sun1

  • 1School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China.

Journal of X-ray science and technology
|May 30, 2023
PubMed
概括

这项研究引入了一种深度学习策略,以加速磁共振成像 (MRI) 扫描. 改进的Y-Net模型从下方采样的数据中重建了高质量的脑MRI,减少了文物并增强了图像细节.

关键词:
数据的一致性数据的一致性深度学习是一种深度学习.图像重建 图像重建磁共振成像技术 磁共振成像技术多对比的MRI是多对比的MRI

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Author Spotlight: Optimized Lung MRI Protocol with Computationally Efficient Reconstruction Methods
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Author Spotlight: Optimized Lung MRI Protocol with Computationally Efficient Reconstruction Methods

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Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique
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Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique

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Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
02:09

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Author Spotlight: Optimized Lung MRI Protocol with Computationally Efficient Reconstruction Methods
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Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique
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科学领域:

  • 医疗成像医学成像
  • 深度学习 (Deep Learning) 是一种深度学习.
  • 生物医学工程 生物医学工程

背景情况:

  • 磁共振成像 (MRI) 对于手术前诊断至关重要,但由于扫描时间长,因此受到影响.
  • 在不损害图像质量的情况下加速MRI采集是一个重要的临床需求.

研究的目的:

  • 开发一个创新的基于深度学习的MRI重建策略.
  • 改进数据一致性方法,以从下方采样数据中提高图像质量.
  • 为了加速磁共振成像 (MRI) 过程.

主要方法:

  • 使用Y-Net3+深度学习网络,使用上下文信息进行高质量的MRI重建.
  • 一种改进的数据一致性忠实度方法结合了线性回归来最大限度地减少K空间差异.
  • 量化评估使用了结构相似性 (SSIM) 和峰值信号与噪声比率 (PSNR) 的指标.

主要成果:

  • Y-Net3+网络通过四倍加速的压缩传感重建改进了SSIM和PSNR.
  • 改进的网络增强了信号噪声比和图像纹理.
  • 数据一致性方法进一步提高了SSIM到0.9808和PSNR到40.9254.

结论:

  • 增强的Y-Net和数据一致性方法有效地从下方采样数据中重建高质量的T2重量级MRI,利用T1重量级信息.
  • 这种方法避免了下方采样的文物,并显示了加速MRI获取的显著临床潜力.
  • 该战略为更快,高准确度的MRI诊断提供了一个有前途的解决方案.