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Evaluation of Short Folded Dipole Antennas as Receive Elements of Ultra-High Field (UHF) Human Head Array

MPG-Autoren
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Avdievich,  N
Max Planck Institute for Biological Cybernetics, Max Planck Society;
Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Ruhm,  L
Max Planck Institute for Biological Cybernetics, Max Planck Society;
Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Scheffler,  K
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Henning,  A
Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Zitation

Avdievich, N., Solomakha, G., Ruhm, L., Scheffler, K., & Henning, A. (2019). Evaluation of Short Folded Dipole Antennas as Receive Elements of Ultra-High Field (UHF) Human Head Array. Poster presented at 27th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2019), Montréal, QC, Canada.


Zitierlink: https://hdl.handle.net/21.11116/0000-0003-96B2-A
Zusammenfassung
Increasing the number of surface loops in a human head receive (Rx)-array improves the peripheral SNR, while the central SNR doesn’t substantially change. Recent work demonstrated that optimal central SNR at UHF requires a contribution of two current patterns associated with a combination of loops and dipoles. A novel array consisting of 8 transceiver surface loops and 8 optimized folded Rx-dipoles was developed and tested. Addition of Rx-dipoles doesn’t substantially alter B1+ field and the maximum local SAR. At the same time the new design improves both central and peripheral SNR as compared to the similar 16-element array with Rx-only vertical loops.