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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

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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框架内多回声扭曲校正用于高级功能性MRI.

Andrew N Van1,2, David F Montez2,3, Timothy O Laumann3

  • 1Department of Biomedical Engineering, Washington University in St. Louis, MO 63130.

bioRxiv : the preprint server for biology
|December 11, 2023
PubMed
概括
此摘要是机器生成的。

由磁场 (B0) 波动引起的功能性MRI (fMRI) 数据扭曲被使用一种新方法MEDIC. 纠正. 这种方法改善了解剖学对齐,并减少了静止状态功能连接 (RSFC) 地图中的运动工件.

关键词:
扭曲纠正 纠正 扭曲纠正多重回声是什么意思 多重回声功能磁力共振成像 (fMRI) 是一种

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High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain
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相关实验视频

Last Updated: Jul 8, 2025

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科学领域:

  • 神经成像是一种神经成像.
  • 磁共振成像 (MRI) 是一种磁共振成像技术.

背景情况:

  • fMRI数据遭受由B0不均性引起的几何扭曲.
  • 目前的校正方法需要单独的场地图获取,该地图对参与者运动敏感.
  • 在fMRI扫描期间的头部运动可以改变B0场,使扭曲纠正复杂化.

结论:

  • 在不需要单独的现场地图的情况下,MEDIC为fMRI数据提供了准确的框架式扭曲校正.
  • 这种方法增强了多回声fMRI的优势,而不是单回声技术.
  • 医学提高数据质量和可靠性,特别是在具有挑战性的扫描条件下,头部运动.