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  Influence of cerebrospinal fluid on specific absorption rate generated by 300 MHz MRI transmit array

Kozlov, M., Bazin, P.-L., Möller, H. E., & Weiskopf, N. (2016). Influence of cerebrospinal fluid on specific absorption rate generated by 300 MHz MRI transmit array. In Proceedings of 10th European Conference on Antennas and Propagation (EuCAP) (pp. 1-5). Piscataway: IEEE. doi:10.1109/EuCAP.2016.7481666.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-4FB4-5 Version Permalink: https://hdl.handle.net/21.11116/0000-000D-6142-B
Genre: Conference Paper

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 Creators:
Kozlov, Mikhail1, Author                 
Bazin, Pierre-Louis1, 2, Author           
Möller, Harald E.3, Author           
Weiskopf, Nikolaus1, Author           
Affiliations:
1Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205649              
2Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_634549              
3Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634558              

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Free keywords: MRI; Safety; Human models
 Abstract: We investigated how cerebrospinal fluid (CSF) simulated as a single electrically connected object and variation of the geometry of an anatomical human head model influence the transmit and safety excitation efficiencies of a 7T magnetic resonance imaging transmit array. A dual-row array was excited in circularly polarized (CP) and radiofrequency (RF) shimming modes. In both excitation modes, CSF partially shielded the brain from the array RF field. It resulted in decreases of both transmit and safety excitation efficiencies. A smaller head size resulted in larger transmit and safety excitation efficiencies for the CP excitation mode.

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Language(s): eng - English
 Dates: 2016-06-02
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1109/EuCAP.2016.7481666
 Degree: -

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Title: 10th European Conference on Antennas and Propagation (EuCAP)
Place of Event: Davos, Switzerland
Start-/End Date: 2016-04-10 - 2016-04-15

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Title: Proceedings of 10th European Conference on Antennas and Propagation (EuCAP)
Source Genre: Proceedings
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Publ. Info: Piscataway : IEEE
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 1 - 5 Identifier: ISBN: 978-8-8907-0186-3