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相关概念视频

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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Radiological Investigation II: MRI and Ventilation Perfusion Scan01:30

Radiological Investigation II: MRI and Ventilation Perfusion Scan

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Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
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相关实验视频

Updated: Sep 12, 2025

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

Published on: November 8, 2012

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通过基于贴片的关节重建加速多向扩散MRI.

Zhongbiao Xu1, Rongli Zhang2, Wei Huang1

  • 1Department of Radiotherapy, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, 510080, China.

NeuroImage
|August 4, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种用于更快,高分辨率扩散核磁共振 (dMRI) 脑部扫描的新方法. 基于补丁的SENSE重建 (PB-SENSE) 方法显著加速dMRI采集,而不会牺牲图像质量.

关键词:
扩散式核磁共振成像 (MRI)音响平面成像 - 图像成像图像补丁 图像补丁联合重建和重建.并行成像并行成像

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Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
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相关实验视频

Last Updated: Sep 12, 2025

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging

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科学领域:

  • 神经成像是一种神经成像.
  • 医学物理 医学物理
  • 生物医学工程 生物医学工程

背景情况:

  • 扩散磁共振成像 (dMRI) 对大脑微观结构和连接分析至关重要.
  • 高分辨率的dMRI获取目前受到长时间扫描的限制,这阻碍了临床使用.
  • 现有的dMRI加速平行成像方法面临着几何因子的限制.

研究的目的:

  • 开发一种新的重建方法,以加速高分辨率的dMRI采集.
  • 为了利用多个扩散方向的图像内部和图像间的相关性,以改进重建.
  • 为了提高高分辨率扩散成像的临床适用性.

主要方法:

  • 提出了一种基于补丁的多个扩散方向的关节重建方法 (PB-SENSE).
  • 利用类似的3D图像补丁的分组来利用图像相关性.
  • 这些群体在敏感性编码 (SENSE) 重建框架内被强迫稀少.
  • 通过模拟和体内实验验证实了该方法.

主要成果:

  • PB-SENSE实现了高质量的dMRI图像,可与完全采样数据相比较.
  • 该方法证明了成功加速高达5倍的速度.
  • 证实了图像内和图像间相关性的有效利用.

结论:

  • 拟议的PB-SENSE方法显著加速了高分辨率的dMRI采集.
  • PB-SENSE的图像质量与传统方法相提并论.
  • 这种技术有可能提高先进的扩散成像的临床实用性.