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Abstract #0565

Flexible multi-turn multi-gap coaxial RF coils (MTMG-CCs): design concept and bench validation

Lena Nohava1,2, Raphaela Czerny2, Michael Obermann2, Michael Pichler2, Roberta Frass-Kriegl2, Jacques Felblinger3, Jean-Christophe Ginefri1, and Elmar Laistler2

1IR4M (Imagerie par Résonance Magnétique et Multi-Modalités), UMR 8081, Université Paris-Sud/CNRS, Université Paris-Saclay, Orsay, France, 2Division MR Physics, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 3Université de Lorraine, Inserm, IADI, Nancy, France

The design of flexible coaxial coils (CCs) based on the single-turn single-gap concept is extended by multiple turns and multiple gaps (MTMG-CCs) to achieve a larger range of coil diameters for a given resonance frequency. An equivalent circuit for MTMG-CCs is presented and the resonance condition is solved numerically for coils with diameters up to 20 cm, 1-3 turns, and 1-3 gaps. For validation of the calculations, 27 coils with 6/9/12 cm diameters, 1-3 turns, and 1-3 gaps were built and characterized on the bench.

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