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  Unshielded Bent Folded-End Dipole 9.4 T Human Head Transceiver Array Decoupled Using Modified Passive Dipoles

Avdievich, N., Solomakha, G., Ruhm, L., Henning, A., & Scheffler, K. (2021). Unshielded Bent Folded-End Dipole 9.4 T Human Head Transceiver Array Decoupled Using Modified Passive Dipoles. In 2021 ISMRM & SMRT Annual Meeting & Exhibition (ISMRM 2021).

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Avdievich, N1, 2, Author              
Solomakha, G, Author
Ruhm, L2, 3, Author              
Henning, A2, 3, Author              
Scheffler, K1, 2, Author              
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
3Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528692              

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 Abstract: Dipole antennas have been used for human imaging at ultra-high field (UHF, >7T). However, for head imaging, dipoles must be substantially shortened, which often cause poor (~ -10dB) decoupling. Common decoupling methods are difficult to use due to distant location of dipoles. Alternatively, adjacent transmit dipoles can be decoupled using passive dipole antennas placed parallel between them. Such passive dipoles may interact destructively with the RF field of the transmit array. In this work, we developed a novel decoupling method of adjacent transmit dipoles by using modified perpendicular passive dipole antennas. The constructed array demonstrated good decoupling and whole-brain coverage.

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 Dates: 2021-05
 Publication Status: Published online
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Title: 2021 ISMRM & SMRT Annual Meeting & Exhibition (ISMRM 2021)
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Start-/End Date: 2021-05-15 - 2021-05-20

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Title: 2021 ISMRM & SMRT Annual Meeting & Exhibition (ISMRM 2021)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 0130 Start / End Page: - Identifier: -