[Study on Vibration Characteristics of Deep Brain Stimulator Induced by Magnetic Resonance Gradient Magnetic Field].

Q4 Medicine
Ya Chen, Peng Cao, Sheng Hu, Kai Zheng, Xun Liu
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引用次数: 0

Abstract

The gradient coils of MRI equipment can induce vibrations in implantable medical devices, causing periodic vibrations of implantable medical devices with respect to the surrounding tissue. This not only results in instrument failure but also causes discomfort to the patient. Therefore, studying the vibration characteristics of implantable devices under different scanning sequences and the orientation of the device relative to the magnetic field is crucial for comprehending vibration performance. This study observed the vibration spectra of a full cranial bone-implanted neurostimulator by using laser vibrometry under typical rapid imaging sequences and explored the impact of different magnetic field orientations on vibration. The results demonstrated that the rapid echo sequences induced diverse and rich vibration components, whereas the planar echo sequences caused relatively simple vibrations. Additionally, the strongest vibrations normally occurred in the maximum conductive surface parallel to the phase-coded direction. It revealed the factors influencing the vibrations of skull fixation active implantable devices and provided guidance for enhancing device safety and protecting patient well-being during MR examinations.

[磁共振梯度磁场诱导深部脑刺激器振动特性研究]。
MRI设备的梯度线圈可以诱导植入式医疗器械的振动,引起植入式医疗器械相对于周围组织的周期性振动。这不仅会导致器械失效,还会给患者带来不适。因此,研究不同扫描顺序下植入式器件的振动特性以及器件相对于磁场的方向对理解其振动性能至关重要。本研究利用激光测振仪对全颅骨骨植入神经刺激器在典型快速成像序列下的振动谱进行了观察,探讨了不同磁场取向对振动的影响。结果表明,快速回波序列引起的振动分量丰富多样,而平面回波序列引起的振动分量相对简单。此外,最强的振动通常发生在平行于相位编码方向的最大导电表面。揭示影响颅骨固定主动植入装置振动的因素,为提高装置安全性和保护患者磁共振检查时的健康提供指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
中国医疗器械杂志
中国医疗器械杂志 Medicine-Medicine (all)
CiteScore
0.40
自引率
0.00%
发文量
8086
期刊介绍: Chinese Journal of Medical Instrumentation mainly reports on the development, progress, research and development, production, clinical application, management, and maintenance of medical devices and biomedical engineering. Its aim is to promote the exchange of information on medical devices and biomedical engineering in China and turn the journal into a high-quality academic journal that leads academic directions and advocates academic debates.
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