Novel Coil Design for a Simultaneous PET-MR System

In conventional whole body MR RF transmit coils, various RF components such as diodes, capacitors, inductors, cables etc. are placed throughout the coil for optimal RF performance. If such components in a simultaneous PET/MR system are placed in the FOV of the PET detector, they will scatter some of the PET signals (511keV annihilation photons), affecting image quality. To address this problem we have created a zero PET attenuation whole body Tx/Rx coil with minimal use of high density RF components. We present design and performance for the resulting antenna as implemented in our 3.0T simultaneous whole body PET/MR system.

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