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  Asymmetric Dipole Head Array for Ultra-High-Field Magnetic Resonance Imaging Turns “Dielectric Resonance” from an Enemy to a Friend

Avdievich, N., Solomakha, G., Ruhm, L., Bause, J., Henning, A., & Scheffler, K. (2020). Asymmetric Dipole Head Array for Ultra-High-Field Magnetic Resonance Imaging Turns “Dielectric Resonance” from an Enemy to a Friend. Poster presented at 2020 ISMRM & SMRT Virtual Conference & Exhibition.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0006-D87A-E Version Permalink: https://hdl.handle.net/21.11116/0000-0006-E7C8-4
Genre: Poster

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https://www.ismrm.org/20/program_files/PP31.htm (Abstract)
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 Creators:
Avdievich, N1, 2, Author           
Solomakha, G, Author
Ruhm, L1, 2, Author           
Bause, J2, 3, Author           
Henning, A1, 2, Author           
Scheffler, K2, 3, Author           
Affiliations:
1Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528692              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
3Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              

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 Abstract: We developed a novel 9.4T (400MHz) human head transceiver array consisted of 8 optimized bent folded dipole antennas. Due to an asymmetrical shape of dipoles (bending) and the RF shield, the array simultaneously excites two modes including a circular polarized mode of the array itself, and the TE mode of the human head. Mode mixing can be easily controlled by changing the folded length. As a result, the new array provides superior whole-brain coverage compared to various 8-element loop and dipole arrays or even to a more complicated 16-element loop array. In addition, the maximum local SAR is substantially reduced.

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 Dates: 2020-08
 Publication Status: Published online
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Title: 2020 ISMRM & SMRT Virtual Conference & Exhibition
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Start-/End Date: 2020-08-08 - 2020-08-14

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Title: 2020 ISMRM & SMRT Virtual Conference & Exhibition
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 0748 Start / End Page: 292 Identifier: -