MRI compatibility of microfabricated magnetic actuators for implantable catheters: Mechanical evaluations.
MRI compatibility of microfabricated magnetic actuators for implantable catheters: Mechanical evaluations.
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用于植入式导管的微制造磁致动器的 MRI 兼容性：机械评估。
DOI：
10.1109/iembs.2010.5627830
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Judy,JackW
中科院分区：
文献类型：
--
作者：
Lee,Hyowon;Xu,Qing;Ephrati,Jeremy;Bergsneider,Marvin;Judy,JackW
在这里，我们证明了微型扭转磁致动器在承受由7 T MRI磁体产生的磁场的机械鲁棒性。在暴露于均匀和非均匀磁场之前和之后，定量测量30个装置的静态和动态机械特性。结果表明，静态和动态机械性能均无统计学显著变化，这缓解了对我们器械与MRI扫描仪的机械兼容性的担忧。需要额外的实验来量化潜在的图像伪影大小和由MRI扫描仪内的磁性微致动器引起的射频感应加热。
Here we demonstrate the mechanical robustness of microfabricated torsional magnetic actuators in withstanding the magnetic fields produced by a 7 T MRI magnet. The static and dynamic mechanical characteristics of 30 devices were quantitatively measured before and after exposure to both uniform and non-uniform magnetic fields. The results show no statistically significant change in both the static and dynamic mechanical performance, which mitigates concerns about the mechanical compatibility of our devices with MRI scanners. Additional experiments are required to quantify the potential image-artifact size and radio-frequency-induced heating caused by the magnetic microactuators inside an MRI scanner.