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Comparison of 7T 16-channel dual-row transmit arrays

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Kozlov,  Mikhail
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

Bode,  J.
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Bazin,  Pierre-Louis
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Weiskopf,  Nikolaus
Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Möller,  Harald E.
Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Kozlov, M., Bode, J., Bazin, P.-L., Weiskopf, N., Möller, H. E., & Shajan, G. (2017). Comparison of 7T 16-channel dual-row transmit arrays. In Proceedings of the 2017 International Conference on Electromagnetics in Advanced Applications (ICEAA) (pp. 1264-1267). doi:10.1109/ICEAA.2017.8065502.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002E-826D-7
Abstract
We evaluated and compared the performance of an inductively decoupled and overlapped dual-row transmit arrays for MRI at 7T. For the evaluated designs, the coupling between adjacent elements in the same row was higher for the overlapped compared to the non-overlapped configuration. However the transmit efficiencies for the circular polarization mode of both coils were similar. For comparisons of array transmit performance, consideration of array-internal losses as well as reflected and radiated power is very important, because their sum can be as high as 55% of the total transmit power.