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相关概念视频

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

6.6K
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: Sep 9, 2025

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging
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Multiple-mouse Neuroanatomical Magnetic Resonance Imaging

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在MRI中使用自闭门的运动强大的直接髓成像

Jinil Park, Sam Sedaghat, Kader Karli Oguz

    Research square
    |September 5, 2025
    PubMed
    概括

    这项研究引入了使用反转恢复超短回声时间 (IR-UTE) 图像的运动稳固髓映射技术. 一种新型的上下 (SI) 自动导航器,具有位反转的螺旋角度,有效地减少运动器件,而不会增加扫描时间.

    科学领域:

    • 神经成像
    • 磁共振成像 (MRI)

    背景情况:

    • 使用反向恢复超短回声时间 (IR-UTE) 的直接髓成像对于神经学评估至关重要.
    • 然而,IR-UTE对运动器件非常敏感,这限制了其临床适用性.
    • 现有的运动校正解决方案通常需要额外的硬件或长时间的扫描,这是不切实际的.

    研究的目的:

    • 评估用于IR-UTE髓成像的新动作缓解策略.
    • 为了评估高低 (SI) 自动导航器与位反转口角相结合的有效性.
    • 确定这种方法是否可以在不延长获取时间的情况下减少运动文物.

    主要方法:

    • 在 3T 实现双回声 IR-UTE 序列,使用亚底波逆转脉冲.
    • 在白物质零点周围获得每段21个光线,然后进行双回声减去.
    • 集成SI自导航器和位逆转用于运动检测和角伪随机化.
    • 在不同的运动条件下对三名志愿者进行布洛克模拟和体内扫描.

    主要成果:

    • 具有比特反转的SI自导航器成功检测并拒绝了运动,在点头时拒绝了10.7%的光线.
    • 模拟表明,比特反转产生同位点扩散函数,与顺序排序不同.
    • 在体内扫描显示,拟议的方法保留了白质细节,并在运动过程中增强了髓质对比度.

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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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    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

    Published on: September 6, 2024

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    相关实验视频

    Last Updated: Sep 9, 2025

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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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    Author Spotlight: Optimized Lung MRI Protocol with Computationally Efficient Reconstruction Methods
    05:07

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

    Published on: September 6, 2024

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    结论:

    • 与位逆相结合的SI自导航器为IR-UTE髓成像提供了有效的运动门.
    • 这种技术显著减少了运动工件,而不需要额外的硬件或更长的扫描时间.
    • 它支持在临床环境中常规实施运动强的髓映射.