Tabletop 700 MHz electron paramagnetic resonance imaging spectrometer

Low frequency electron paramagnetic resonance imaging is a powerful tool to noninvasively measure the physiological status of tumors. Here, we report on the design and functionality of a rapid scan and pulse tabletop imaging spectrometer based around an arbitrary waveform generator and 25 mm cross‐loop resonator operating at 700 MHz. Two and four‐dimensional rapid scan spectral‐spatial images are presented. This tabletop imager is a prototype for future preclinical imagers.