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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: Jun 27, 2025

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T
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MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

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用于低场MRI成像的多模式表面线圈.

Yunkun Zhao, Aditya A Bhosale, Xiaoliang Zhang

    medRxiv : the preprint server for health sciences
    |May 3, 2024
    PubMed
    概括

    一个新的多模式表面线圈通过提高射频磁场 (B1) 效率来提高低场MRI灵敏度. 这项创新解决了更安全,更具成本效益的MRI系统中信号噪声比限制的问题.

    科学领域:

    • 磁共振成像 (MRI) 是一种磁共振成像技术.
    • 无线电频率工程 无线电频率工程

    背景情况:

    • 低场MRI比高场MRI提供安全性和成本优势.
    • 低场MRI的一个关键挑战是其固有的低信号噪声比 (灵敏度).

    研究的目的:

    • 引入和评估一种新的多式联接式表面线圈技术.
    • 提高射频磁场 (B1) 的效率,提高低波磁场MRI中的MRI灵敏度.

    主要方法:

    • 开发了一种多模式表面线圈,其中包括电磁合的相同共振器.
    • 通过数值模拟,射频测量和与传统表面线圈进行比较来验证.
    • 对线圈的最低频率模式进行研究,以确定其适用于MRI成像.

    主要成果:

    • 与传统的表面线圈相比,多式表面线圈显示出更高的B1效率.
    • 拟议的线圈为低电容低场MRI所需的低频率提供了方便的调.
    • 在B1效率方面表现优于传统线圈,这是传统线圈通常表现最高的指标.

    结论:

    • 多模式表面线圈技术有效地提高了低场MRI中的B1效率和MR灵敏度.
    • 这种线圈设计克服了与传统的低频MRI线圈相关的调整困难.

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  • 为提高低场MRI系统的性能和适用性提供了一个有希望的进步.