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射频盖:一个26通道的灵活的射频线圈盖,用于在3T的优化并发TMS/fMRI实验

Lucia I Navarro de Lara^1,2, Sebastian Ardila¹, Lincoln Craven-Brightman¹

¹Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States.

Imaging neuroscience (Cambridge, Mass.)

|October 17, 2025

概括

研究人员开发了RF Cap,一种新的灵活射频线圈,用于同时进行跨磁刺激 (TMS) 和功能磁共振成像 (fMRI). 这种硬件在TMS实验期间显著提高了大脑成像质量.

科学领域:

神经成像是一种神经成像.
神经科学是一个神经科学.
生物医学工程生物医学工程

背景情况:

结合脑部成像与非侵入性脑刺激,如经磁刺激 (TMS),为了解大脑功能提供了显著的潜力.
对于并发TMS/fMRI的现有硬件解决方案是有限的,经常牺牲成像质量.

研究的目的:

设计,构建和测试一种新的硬件解决方案,以实现3特斯拉的并发TMS/fMRI,而不会影响图像质量.
为了引入"RF Cap",这是一款26通道灵活的RF线圈盖,优化用于同时进行TMS和fMRI.

主要方法:

开发了一种26通道灵活的射频线圈盖 (RF Cap),可以完全覆盖大脑.
该RF Cap具有一个灵活的烯盖子,有26个RF同轴电缆环,以及预放大器的刚性部分.
集成的灵活PCB和一个BALUN,以最大限度地减少常用模式信号,以提高性能.

主要成果:

与鸟线圈相比,RF Cap显示了显著更高的信号噪声比率 (SNR) (4x在中心,10-16x在皮层).
同时的TMS在刺激区域造成了10-25%的SNR损失.
射频帽允许TMS在大多数头皮目标上进行管理,易于设置和神经导航兼容性.

结论:

射频帽为并发的TMS/fMRI采集提供了一个用户友好和舒适的解决方案.
这种创新的硬件有可能推进神经科学研究,并促进TMS/fMRI的未来临床应用.

关键词:

神经调节神经的MRI.同时进行的TMS/fMRI.灵活的射频线圈

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