Journal of Magnetic Resonance, volume 286, pages 78-81

Experimental investigation of a metasurface resonator for in vivo imaging at 1.5 T

de Bruin Paul 4, 5, 6
Zivkovic Irena 4, 5, 6
Kallos Efthymios 7
Belov Pavel A. 1
Webb Andrew 4, 5, 6
4
 
C.J. Gorter Center for High Field MRI
5
 
Dept. of Radiology, Leiden University Medical Center
6
 
Leiden the Netherlands
7
 
MediWise - Medical Wireless Sensing Ltd, Queen Mary Bio Enterprise, London, UK
Publication typeJournal Article
Publication date2018-01-01
Quartile SCImago
Q1
Quartile WOS
Q3
Impact factor2.2
ISSN10907807
Biochemistry
Biophysics
Condensed Matter Physics
Nuclear and High Energy Physics
Abstract
In this work, we experimentally demonstrate an increase in the local transmit efficiency of a 1.5 T MRI scanner by using a metasurface formed by an array of brass wires embedded in a high permittivity low loss medium. Placement of such a structure inside the scanner results in strong coupling of the radiofrequency field produced by the body coil with the lowest frequency electromagnetic eigenmode of the metasurface. This leads to spatial redistribution of the near fields with enhancement of the local magnetic field and an increase in the transmit efficiency per square root maximum specific absorption rate in the region-of-interest. We have investigated this structure in vivo and achieved a factor of 3.3 enhancement in the local radiofrequency transmit efficiency.

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Shchelokova A. V. et al. Experimental investigation of a metasurface resonator for in vivo imaging at 1.5 T // Journal of Magnetic Resonance. 2018. Vol. 286. pp. 78-81.
GOST all authors (up to 50) Copy
Shchelokova A. V., Slobozhanyuk A. P., de Bruin P., Zivkovic I., Kallos E., Belov P. A., Webb A. Experimental investigation of a metasurface resonator for in vivo imaging at 1.5 T // Journal of Magnetic Resonance. 2018. Vol. 286. pp. 78-81.
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RIS Copy
TY - JOUR
DO - 10.1016/j.jmr.2017.11.013
UR - https://doi.org/10.1016%2Fj.jmr.2017.11.013
TI - Experimental investigation of a metasurface resonator for in vivo imaging at 1.5 T
T2 - Journal of Magnetic Resonance
AU - Shchelokova, Alena V.
AU - Slobozhanyuk, Alexey P.
AU - de Bruin, Paul
AU - Zivkovic, Irena
AU - Kallos, Efthymios
AU - Belov, Pavel A.
AU - Webb, Andrew
PY - 2018
DA - 2018/01/01 00:00:00
PB - Elsevier
SP - 78-81
VL - 286
SN - 1090-7807
ER -
BibTex
Cite this
BibTex Copy
@article{2018_Shchelokova
author = {Alena V. Shchelokova and Alexey P. Slobozhanyuk and Paul de Bruin and Irena Zivkovic and Efthymios Kallos and Pavel A. Belov and Andrew Webb},
title = {Experimental investigation of a metasurface resonator for in vivo imaging at 1.5 T},
journal = {Journal of Magnetic Resonance},
year = {2018},
volume = {286},
publisher = {Elsevier},
month = {jan},
url = {https://doi.org/10.1016%2Fj.jmr.2017.11.013},
pages = {78--81},
doi = {10.1016/j.jmr.2017.11.013}
}
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