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  Using Inductively-Coupled Dipole Pairs as Array Elements for Improving Whole-Brain Coverage at 9.4T

Popova, K., Glybovski, S., Scheffler, K., Avdievich, N., & Solomakha, G. (2024). Using Inductively-Coupled Dipole Pairs as Array Elements for Improving Whole-Brain Coverage at 9.4T. Poster presented at ISMRM & ISMRT Annual Meeting & Exhibition 2024, Singapore.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000F-397F-4 Version Permalink: https://hdl.handle.net/21.11116/0000-000F-3981-F
Genre: Poster

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https://www.ismrm.org/24/docs/24ToC.pdf (Abstract)
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 Creators:
Popova, K, Author
Glybovski, S, Author
Scheffler, K1, Author                 
Avdievich, N1, Author                 
Solomakha, G1, Author                 
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              

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 Abstract: Motivation: At ultra-high fields, homogeneity of brain MRI is deteriorated by the subject-specific non-uniform distribution of RF magnetic field B . Goal(s): To design a 9.4T eight-channel transceiver dipole array with improved homogeneity of B in the axial direction with better whole-brain coverage. Approach: We used an array consisting of paired passively coupled folded-end dipoles. We numerically optimized the B homogeneity by adjusting the overlap between the folded ends of the active and passive dipoles and the load impedance of the passive one. Results: The proposed array demonstrated improved B whole-brain homogeneity including the upper C-spine compared to several state-of-the-art dipole and loop arrays. Impact: The presented antenna element of coupled folded dipoles can be used in designing UHF array coils with improved longitudinal whole-brain coverage. Such coils can be beneficial for studies where imaging of the entire brain including the upper C-spine is required.

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 Dates: 2024-05
 Publication Status: Published online
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Title: ISMRM & ISMRT Annual Meeting & Exhibition 2024
Place of Event: Singapore
Start-/End Date: 2024-05-04 - 2024-05-09

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Title: ISMRM & ISMRT Annual Meeting & Exhibition 2024
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 0464 Start / End Page: 279 Identifier: -