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  Novel Dipole/Loop Combined Arrays for Human Whole Brain Imaging at 7 T

Avdievich, N., Nikulin, A., Ruhm, L., Magill, A., Henning, A., & Scheffler, K. (2022). Novel Dipole/Loop Combined Arrays for Human Whole Brain Imaging at 7 T. In Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting (ISMRM 2022).

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 Creators:
Avdievich, NI1, Author              
Nikulin, AV1, Author              
Ruhm, L2, Author              
Magill, AW, Author
Henning, A, Author              
Scheffler, K1, Author              
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528692              

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 Abstract: The advancement of clinical applications of 7T MRI depends heavily on the development of new RF coil designs. Recent works based on Ultimate Intrinsic SNR theory demonstrated that an optimal central SNR at 7T requires combining surface loops with dipole antennas. In this work, we developed and evaluated two novel 32-element 7T human head loop/dipole array designs. Both coils demonstrated superior Tx-efficiency, longitudinal coverage, and SNR in comparison to widely used commercial array coil. While the transceiver (TxRx)-dipole/receive(Rx)-loop array demonstrated best SNR, the TxRx-loop/Rx-dipole array showed the best Tx-efficiency. In addition, double-row TxRx-loop/Rx-dipole array provides 3D RF shimming capability.

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 Dates: 2022-05
 Publication Status: Published online
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Title: Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting (ISMRM 2022)
Place of Event: London, UK
Start-/End Date: 2022-05-07 - 2022-05-12

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Title: Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting (ISMRM 2022)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 0710 Start / End Page: - Identifier: -