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Abstract #3504

RF coil design for multi-nuclear lung MRI of 19F fluorinated gases and 1H using MEMS

Adam Maunder1, Madhwesha Rao1, Fraser Robb2, and Jim Wild1

1Unit of Academic Radiology, University of Sheffield, Sheffield, United Kingdom, 2GE Healthcare, Aurora, OH, United States

Mutli-nuclear lung MRI using inhaled inert fluorinated 19F gas and 1H provide complementary structural-functional information. The close MR resonance frequencies of the two nuclei preclude the use of dual-tuned coils using trap circuits. Thus, we introduce the use of Micro-electromechanical systems (MEMS) in a quadrature transmit-receive RF coil to switch between two resonance frequencies of 19F and 1H at 1.5T. Characterization of the additional loss and co-registered imaging of 19F and 1H with a custom-built body sized phantom is demonstrated.

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