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 and¹H with a custom-built body sized phantom is demonstrated.

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