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Abstract #1810

Impact of different meander sizes on the RF transmit performance and decoupling of micro strip line elements at 7T

Stefan H. G. Rietsch 1,2 , Harald H. Quick 1,2 , and Stephan Orzada 1

1 Erwin L. Hahn Institute for MR Imaging, Essen, Germany, 2 High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany

Micro strip line elements and dipole antennas have successfully been incorporated as radiofrequency transmit elements in 7T high field MRI. Some inherent features of both types are combined in meander elements (ME). In this work finite difference time domain field simulations are used to investigate the impact of changing meander size on RF transmit performance and on decoupling between neighboring ME. Results show that medium meander sizes allow for maximum central field strength, while providing the best mutual decoupling to adjacent elements. In conclusion, RF transmit-arrays consisting of ME should be based on elements with medium meander size.

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