Hybrid MR-PET is a powerful imaging technique that capitalised on the advantages of both modalities. However, to optimise these capabilities, the MRI antenna, which is located inside the effective PET detection area, needs to be operated without compromising any aspects of system performance or image quality compared to the stand-alone instrumentation. Here, we report a novel J-pole antenna array concept which is gamma radiation transparent. Furthermore, this unique feature provides advantages in MR-only applications by reducing the coupling effect between cables and the antenna elements and by lowering the potential specific absorption rate burden.
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