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使用电磁和神经生理学建模在MRI下对骨科板对梯度诱导的外周神经刺激的影响进行计算研究,使用电磁和神经生理学建模

Lijian Yang¹, Xiaolin Yang¹, Hui Ye²

¹Department of Electrical and Computer Engineering, University of Houston, Houston, Texas, USA.

Magnetic resonance in medicine

|February 18, 2025

概括

骨科植入物在MRI期间显著降低了周围神经刺激 (PNS) 值,降低了安全边缘. 这凸显了对使用这些设备的患者进行先进安全评估的需要.

科学领域:

生物医学工程生物医学工程
医学成像物理医学成像物理
神经科学是一个神经科学.

背景情况:

磁共振成像 (MRI) 使用强大的时间变化的磁场.
骨科植入物在需要MRI的患者中很常见.
周围神经刺激 (PNS) 是MRI期间潜在的安全问题.

研究的目的:

评估骨科板在MRI期间对PNS值的影响.
为了确定植入物存在如何改变MRI扫描期间的神经激活.

主要方法:

使用了解剖学电磁和神经生理学建模.
模拟的电磁场,有和没有骨科板.
在各种梯度线圈条件下模拟神经反应.

主要成果:

整形外科植入物可将神经刺激值降低高达80%.
降低的门接近国际电工委员会 (IEC) 的限制.
植入物显著降低了MRI期间PNS的安全边际.

结论:

骨科植入物在MRI期间大幅降低神经激活值.
降低值方法建立了PNS安全极限 (IEC 60601-2-33).
加强安全评估对于带有骨科植入物的MRI患者至关重要.

关键词:

磁力共振成像梯度线圈切换连接器电磁场模拟电磁场模拟神经动力学模型的神经动力学模型周围神经的刺激.

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Magnetic Resonance Imaging

Magnetic Resonance Imaging

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...