Cavity resonators are widely used in electron paramagnetic resonance, very high field magnetic resonance microimaging and also in high field human imaging. The basic principles and designs of different forms of cavity resonators including rectangular, cylindrical, re-entrant, cavity magnetrons, toroidal cavities and dielectric resonators are reviewed. Applications in EPR and MRI are summarized, and finally the topic of traveling wave MRI using the magnet bore as a waveguide is discussed.

中文翻译：

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电子顺磁共振、核磁共振和磁共振成像中的腔和波导谐振器

腔谐振器广泛用于电子顺磁共振、超高场磁共振显微成像以及高场人体成像。综述了不同形式的腔谐振器的基本原理和设计，包括矩形、圆柱形、凹形、腔磁控管、环形腔和介质谐振器。总结了 EPR 和 MRI 中的应用，最后讨论了使用磁体孔作为波导的行波 MRI 的主题。