在7TMRI期间评估脑动脉瘤流量转移器的磁场相互作用和加热
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Updated: Jul 16, 2025

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Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
Published on: February 19, 2021
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Suguru Igarashi1, Kohei Chida2, Tsuyoshi Matsuda3
1Department of Neurosurgery, Iwate Medical University School of Medicine, 1-1, Idaidori 2-chome, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan.
Neuroradiology
|September 13, 2023
概括
用于动脉瘤的流量转移器 (FD) 在7特斯拉MRI扫描中没有显示显著的磁场相互作用或射频诱导的加热. 这些发现表明,FD在7TMRI手术中是安全的.
科学领域:
- 生物医学工程 生物医学工程
- 医疗成像医学成像
- 干预性神经辐射学
背景情况:
- 流量转移器 (FD) 对于治疗各种动脉瘤至关重要.
- 关于FD与磁场的相互作用和MRI相关的加热,存在安全问题.
研究的目的:
- 为了评估两种FD类型与7特斯拉 (7T) 静态磁场的不良相互作用.
- 评估这些FD的7TMRI期间的射频诱导加热.
主要方法:
- 使用偏斜角度和低摩擦表面方法测量了位移力和扭矩.
- 在7TMRI期间,用3D快速旋转回声序来评估凝盐水幻体中的加热.
主要成果:
- 在7T静态磁场中没有观察到可检测的位移力或磁性诱导的扭矩.
- 无线电频率诱导的加热在7TMRI期间,在FD两种类型中保持在0.6°C以下.
结论:
- 在7TMRI过程中,磁场相互作用和对FD的加热效应处于可接受的安全范围内.
- 这些结果支持安全使用FD与7TMRI结合使用.
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