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

M. Kozlov; P. L. Bazin; H. E. Moller; N. Weiskopf

doi:10.1109/EuCAP.2016.7481666

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

M. Kozlov, P. L. Bazin, H. E. Moller, N. Weiskopf

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

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.

Original language	English (US)
Title of host publication	2016 10th European Conference on Antennas and Propagation, EuCAP 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9788890701863
DOIs	https://doi.org/10.1109/EuCAP.2016.7481666
State	Published - May 31 2016
Externally published	Yes
Event	10th European Conference on Antennas and Propagation, EuCAP 2016 - Davos, Switzerland Duration: Apr 10 2016 → Apr 15 2016

Other

Other	10th European Conference on Antennas and Propagation, EuCAP 2016
Country/Territory	Switzerland
City	Davos
Period	4/10/16 → 4/15/16

Keywords

Antenna arrays
biomedical imaging
computational electromagnetics

ASJC Scopus subject areas

Radiation
Computer Networks and Communications
Instrumentation

Access to Document

10.1109/EuCAP.2016.7481666

Cite this

Influence of cerebrospinal fluid on specific absorption rate generated by 300 MHz MRI transmit array. / Kozlov, M.; Bazin, P. L.; Moller, H. E. et al.
2016 10th European Conference on Antennas and Propagation, EuCAP 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7481666.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kozlov, M, Bazin, PL, Moller, HE & Weiskopf, N 2016, Influence of cerebrospinal fluid on specific absorption rate generated by 300 MHz MRI transmit array. in 2016 10th European Conference on Antennas and Propagation, EuCAP 2016., 7481666, Institute of Electrical and Electronics Engineers Inc., 10th European Conference on Antennas and Propagation, EuCAP 2016, Davos, Switzerland, 4/10/16. https://doi.org/10.1109/EuCAP.2016.7481666

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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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N2 - 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.

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

Abstract

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Keywords

ASJC Scopus subject areas

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