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  Optimization of the Transceiver Phased Array for Human Brain Imaging at 9.4T: Loop Overlapping Rediscovered

Avdievich, N., Giapitzakis, I., Pfrommer, A., & Henning, A. (2016). Optimization of the Transceiver Phased Array for Human Brain Imaging at 9.4T: Loop Overlapping Rediscovered. In 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016).

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Item Permalink: https://hdl.handle.net/21.11116/0000-0000-7CE6-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0000-E985-3
Genre: Meeting Abstract

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Avdievich, NI1, 2, 3, Author           
Giapitzakis, IA1, 2, 3, Author           
Pfrommer, A1, 3, Author           
Henning, A1, 2, 3, Author           
Affiliations:
1Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528692              
2Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Ultra-high field (UHF) (>7T) transmit (Tx) and transceiver surface loop phased arrays improve Tx-efficiency and homogeneity for human brain imaging. Overlapping the loops enhances Tx-efficiency and SNR by increasing the penetration depth. However, overlapping can compromise decoupling and SNR by generating a substantial mutual resistance. Therefore, UHF Tx-arrays are commonly constructed using gapped loops. Based on analytical optimization we constructed a 9.4T 8-loop head transceiver array. Both the magnetic and electric coupling were compensated at the same time by overlapping and excellent decoupling was obtained. Tx- and Rx-performance of the array was compared favorably to that of a gaped array.

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 Dates: 2016-05-09
 Publication Status: Issued
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 Identifiers: BibTex Citekey: AvdievichGPH2016
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Title: 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016)
Place of Event: Singapore
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Title: 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 0169 Start / End Page: - Identifier: -