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相关概念视频

¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

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The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
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相关实验视频

Updated: Sep 10, 2025

Use of a Multi-compartment Dynamic Single Enzyme Phantom for Studies of Hyperpolarized Magnetic Resonance Agents
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在多频段,多回声EPI序列中收集的生理数据

Katherine L Bottenhorn1,2, Taylor Salo2,3, Michael C Riedel2,4

  • 1Department of Population and Public Health Sciences, University of Southern California, Los Angeles, CA USA.

Aperture neuro
|August 25, 2025
PubMed
概括
此摘要是机器生成的。

在fMRI过程中收集生理数据容易产生错误. 这项研究介绍了数字过方法,以减轻心电图和皮电活动中的这些人工物,改善fMRI数据质量.

关键词:
数据预处理功能磁共振成像生理学心理生理学信号处理

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Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
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Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

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科学领域:

  • 神经成像
  • 生理监测
  • 生物医学工程

背景情况:

  • 在fMRI过程中收集生理数据有助于数据清理和心理生理研究.
  • 核磁共振脉冲序列通常会在生理记录 (心电图,脑电图) 中引入器件.
  • 现有的文物过方法需要适应先进的fMRI序列.

研究的目的:

  • 评估BIOPAC系统对fMRI的物质过建议.
  • 将这些建议扩展到多频段,多回声fMRI序列.
  • 在生理fMRI数据中提供人工物缓解的实用工具.

主要方法:

  • 在fMRI中评估BIOPAC生理数据 (ECG,EDA).
  • 对单频段,单回声序进行过.
  • 开发并测试了用于多频段,多回声序的数字过器,包括切片时间,多频段因子和重复时间.

主要成果:

  • 随着fMRI脉冲序列参数的变化,
  • 数字过器有效地减轻生理数据中的MRI脉冲序列缺陷.
  • 拟议的过方法适用于各种fMRI序列类型.

结论:

  • 使用定制的数字过器可以成功缓解生理fMRI数据中的缺陷.
  • 开发的方法提高了fMRI生理记录的质量.
  • 开源工具和笔记本有助于实现这些清除噪音的技术.