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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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相关实验视频

Updated: Jul 8, 2025

Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury
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偏头痛中的微观结构差异:一个扩散-张力成像研究.

Dóra Dobos1,2,3, Gyöngyi Kökönyei1,2,3,4, Gyula Gyebnár5

  • 1NAP3.0-SE Neuropsychopharmacology Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary.

Cephalalgia : an international journal of headache
|December 19, 2023
PubMed
概括
此摘要是机器生成的。

偏头痛与大脑微观结构的变化有关,特别是在视觉区域. 偏头痛持续时间较长与与默认模式网络相关的大脑区域的变化有关.

关键词:
偏头痛是一种偏头痛.默认模式网络模式 默认模式网络模式扩散-张力成像成像技术微观结构完整性 微观结构完整性

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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
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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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相关实验视频

Last Updated: Jul 8, 2025

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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
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科学领域:

  • 神经成像是一种神经成像.
  • 神经科学是一个神经科学.
  • 放射学 放射学是一门学科.

背景情况:

  • 扩散张力成像 (DTI) 评估整个大脑的微观结构完整性.
  • 之前关于偏头痛相关的微观结构变化的研究显示出不一致的结果.
  • 这项研究旨在复制偏头痛中频繁出现的DTI发现,并探索与偏头痛参数的相关性.

研究的目的:

  • 通过使用DTI,研究偏头痛患者的微观结构性大脑变化.
  • 确定偏头痛的特征 (强度,频率,持续时间) 与观察到的微观结构变化是否相关.

主要方法:

  • 从37名偏头痛患者和40名对照组收集了扩散权重的MRI数据.
  • 在SPM12中使用voxel-wise分析分析分析了分数异构性 (FA) 和平均扩散性 (MD).
  • 与区域FA和MD值相关联的自我报告的偏头痛参数.

主要成果:

  • 偏头痛患者在头部区域表现出减少的FA.
  • 在偏头痛患者的其他13个大脑集群中观察到增加的FA.
  • 在小脑和小中发现MD的减少;没有检测到MD的增加.
  • 偏头痛的持续时间在额叶皮层与FA正相关,在上额叶叶中与FA负相关.

结论:

  • 偏头痛与大脑视觉区域的微结构完整性受损有关.
  • 偏头痛的持续时间与默认模式网络区域的微观结构变化相关.