平行板谐振器：一种用于在宽频率范围内进行磁共振和磁共振成像研究的射频探头。
The parallel-plate resonator: An RF probe for MR and MRI studies over a wide frequency range.
作者信息
Aguilera Andrés Ramírez, Sanders Kevin J, Goward Gillian R, Balcom Bruce J
机构信息
UNB MRI Centre, Department of Physics, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada.
Department of Chemistry, McMaster University, Hamilton, Ontario, L8S 4L8, Canada.
出版信息
Magn Reson Lett. 2023 Jan 26;3(4):306-318. doi: 10.1016/j.mrl.2023.01.002. eCollection 2023 Nov.
We explore the use of the parallel-plate resonator for the study of thin cuboid samples over a wide range of magnetic resonance frequencies. The parallel-plate resonator functions at frequencies from tens to hundreds of MHz. Seven parallel-plate resonators are presented and discussed in a frequency range from 8 to 500 MHz. Magnetic resonance experiments were performed on both horizontal and vertical bore magnet systems with lithium and hydrogen nuclei. Parallel-plate radiofrequency (RF) probes are easy to build and easy to optimize. Experiments and simulations showed good sensitivity of the parallel-plate RF probe geometry with a small decrease in sensitivity at higher frequencies.
我们探讨了平行板谐振器在宽范围磁共振频率下用于研究薄长方体样品的应用。平行板谐振器在数十至数百兆赫兹的频率下工作。本文介绍并讨论了七个在8至500兆赫兹频率范围内的平行板谐振器。利用锂核和氢核在水平和垂直孔径磁体系统上进行了磁共振实验。平行板射频（RF）探头易于构建且易于优化。实验和模拟表明，平行板RF探头几何结构具有良好的灵敏度，不过在较高频率下灵敏度会略有下降。
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