Volumetric wireless coil based on periodically coupled split-loop resonators for clinical wrist imaging

Alena V Shchelokova; Cornelis A T van den Berg; Dmitry A Dobrykh; Stanislav B Glybovski; Mikhail A Zubkov; Ekaterina A Brui; Dmitry S Dmitriev; Alexander V Kozachenko; Alexander Y Efimtcev; Andrey V Sokolov; Vladimir A Fokin; Irina V Melchakova; Pavel A Belov

doi:10.1002/mrm.27140

Volumetric wireless coil based on periodically coupled split-loop resonators for clinical wrist imaging

Alena V Shchelokova, Cornelis A T van den Berg, Dmitry A Dobrykh, Stanislav B Glybovski, Mikhail A Zubkov, Ekaterina A Brui, Dmitry S Dmitriev, Alexander V Kozachenko, Alexander Y Efimtcev, Andrey V Sokolov, Vladimir A Fokin, Irina V Melchakova, Pavel A Belov

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

PURPOSE: Design and characterization of a new inductively driven wireless coil (WLC) for wrist imaging at 1.5 T with high homogeneity operating due to focusing the B1 field of a birdcage body coil.

METHODS: The WLC design has been proposed based on a volumetric self-resonant periodic structure of inductively coupled split-loop resonators with structural capacitance. The WLC was optimized and studied regarding radiofrequency fields and interaction to the birdcage coil (BC) by electromagnetic simulations. The manufactured WLC was characterized by on-bench measurements and in vivo and phantom study in comparison to a standard cable-connected receive-only coil.

RESULTS: The WLC placed into BC gave the measured B1+ increase of the latter by 8.6 times for the same accepted power. The phantom and in vivo wrist imaging showed that the BC in receiving with the WLC inside reached equal or higher signal-to-noise ratio than the conventional clinical setup comprising the transmit-only BC and a commercial receive-only flex-coil and created no artifacts. Simulations and on-bench measurements proved safety in terms of specific absorption rate and reflected transmit power.

CONCLUSIONS: The results showed that the proposed WLC could be an alternative to standard cable-connected receive coils in clinical magnetic resonance imaging. As an example, with no cable connection, the WLC allowed wrist imaging on a 1.5 T clinical machine using a full-body BC for transmitting and receive with the desired signal-to-noise ratio, image quality, and safety.

Original language	English
Pages (from-to)	1726-1737
Number of pages	12
Journal	Magnetic Resonance in Medicine
Volume	80
Issue number	4
DOIs	https://doi.org/10.1002/mrm.27140
Publication status	Published - Oct 2018

Keywords

metasolenoid
SNR enhancement
split-loop resonators
transmit efficiency
wireless coil
Wrist/diagnostic imaging
Humans
Signal-To-Noise Ratio
Radio Waves
Equipment Design
Image Processing, Computer-Assisted/methods
Magnetic Resonance Imaging/instrumentation
Phantoms, Imaging
Wireless Technology/instrumentation

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10.1002/mrm.27140

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Shchelokova, A. V., van den Berg, C. A. T., Dobrykh, D. A., Glybovski, S. B., Zubkov, M. A., Brui, E. A., Dmitriev, D. S., Kozachenko, A. V., Efimtcev, A. Y., Sokolov, A. V., Fokin, V. A., Melchakova, I. V., & Belov, P. A. (2018). Volumetric wireless coil based on periodically coupled split-loop resonators for clinical wrist imaging. Magnetic Resonance in Medicine, 80(4), 1726-1737. https://doi.org/10.1002/mrm.27140

@article{77fbfea7eb8f4306b405f28cdd1ca200,

title = "Volumetric wireless coil based on periodically coupled split-loop resonators for clinical wrist imaging",

abstract = "PURPOSE: Design and characterization of a new inductively driven wireless coil (WLC) for wrist imaging at 1.5 T with high homogeneity operating due to focusing the B1 field of a birdcage body coil.METHODS: The WLC design has been proposed based on a volumetric self-resonant periodic structure of inductively coupled split-loop resonators with structural capacitance. The WLC was optimized and studied regarding radiofrequency fields and interaction to the birdcage coil (BC) by electromagnetic simulations. The manufactured WLC was characterized by on-bench measurements and in vivo and phantom study in comparison to a standard cable-connected receive-only coil.RESULTS: The WLC placed into BC gave the measured B1+ increase of the latter by 8.6 times for the same accepted power. The phantom and in vivo wrist imaging showed that the BC in receiving with the WLC inside reached equal or higher signal-to-noise ratio than the conventional clinical setup comprising the transmit-only BC and a commercial receive-only flex-coil and created no artifacts. Simulations and on-bench measurements proved safety in terms of specific absorption rate and reflected transmit power.CONCLUSIONS: The results showed that the proposed WLC could be an alternative to standard cable-connected receive coils in clinical magnetic resonance imaging. As an example, with no cable connection, the WLC allowed wrist imaging on a 1.5 T clinical machine using a full-body BC for transmitting and receive with the desired signal-to-noise ratio, image quality, and safety.",

keywords = "metasolenoid, SNR enhancement, split-loop resonators, transmit efficiency, wireless coil, Wrist/diagnostic imaging, Humans, Signal-To-Noise Ratio, Radio Waves, Equipment Design, Image Processing, Computer-Assisted/methods, Magnetic Resonance Imaging/instrumentation, Phantoms, Imaging, Wireless Technology/instrumentation",

author = "Shchelokova, \{Alena V\} and \{van den Berg\}, \{Cornelis A T\} and Dobrykh, \{Dmitry A\} and Glybovski, \{Stanislav B\} and Zubkov, \{Mikhail A\} and Brui, \{Ekaterina A\} and Dmitriev, \{Dmitry S\} and Kozachenko, \{Alexander V\} and Efimtcev, \{Alexander Y\} and Sokolov, \{Andrey V\} and Fokin, \{Vladimir A\} and Melchakova, \{Irina V\} and Belov, \{Pavel A\}",

note = "Funding Information: The Government of the Russian Federation, Grant No. 074-U01; The Ministry of Education and Science of the Russian Federation, Zadanie No. 3.2465.2017/4.6 Funding Information: The authors thank Prof. Constantin Simovski, Prof. Sergey Tretyakov, Dr. Nikolai Avdievitch and Dr. Alexey Sloboz-hanyuk for useful discussion. The authors thank Dr. Redha Abdeddaim for useful discussion and the idea of using telescopic tubes and for showing a good place in Paris to buy them. The numerical calculations were supported by the Government of the Russian Federation (Grant No. 074-U01). Experimental studies were supported by the Ministry of Education and Science of the Russian Federation (Zadanie No. 3.2465.2017/4.6). Publisher Copyright: {\textcopyright} 2018 International Society for Magnetic Resonance in Medicine Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2018",

month = oct,

doi = "10.1002/mrm.27140",

language = "English",

volume = "80",

pages = "1726--1737",

journal = "Magnetic Resonance in Medicine",

issn = "0740-3194",

publisher = "John Wiley \& Sons Inc.",

number = "4",

}

Shchelokova, AV, van den Berg, CAT, Dobrykh, DA, Glybovski, SB, Zubkov, MA, Brui, EA, Dmitriev, DS, Kozachenko, AV, Efimtcev, AY, Sokolov, AV, Fokin, VA, Melchakova, IV & Belov, PA 2018, 'Volumetric wireless coil based on periodically coupled split-loop resonators for clinical wrist imaging', Magnetic Resonance in Medicine, vol. 80, no. 4, pp. 1726-1737. https://doi.org/10.1002/mrm.27140

TY - JOUR

T1 - Volumetric wireless coil based on periodically coupled split-loop resonators for clinical wrist imaging

AU - Shchelokova, Alena V

AU - van den Berg, Cornelis A T

AU - Dobrykh, Dmitry A

AU - Glybovski, Stanislav B

AU - Zubkov, Mikhail A

AU - Brui, Ekaterina A

AU - Dmitriev, Dmitry S

AU - Kozachenko, Alexander V

AU - Efimtcev, Alexander Y

AU - Sokolov, Andrey V

AU - Fokin, Vladimir A

AU - Melchakova, Irina V

AU - Belov, Pavel A

N1 - Funding Information: The Government of the Russian Federation, Grant No. 074-U01; The Ministry of Education and Science of the Russian Federation, Zadanie No. 3.2465.2017/4.6 Funding Information: The authors thank Prof. Constantin Simovski, Prof. Sergey Tretyakov, Dr. Nikolai Avdievitch and Dr. Alexey Sloboz-hanyuk for useful discussion. The authors thank Dr. Redha Abdeddaim for useful discussion and the idea of using telescopic tubes and for showing a good place in Paris to buy them. The numerical calculations were supported by the Government of the Russian Federation (Grant No. 074-U01). Experimental studies were supported by the Ministry of Education and Science of the Russian Federation (Zadanie No. 3.2465.2017/4.6). Publisher Copyright: © 2018 International Society for Magnetic Resonance in Medicine Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2018/10

Y1 - 2018/10

N2 - PURPOSE: Design and characterization of a new inductively driven wireless coil (WLC) for wrist imaging at 1.5 T with high homogeneity operating due to focusing the B1 field of a birdcage body coil.METHODS: The WLC design has been proposed based on a volumetric self-resonant periodic structure of inductively coupled split-loop resonators with structural capacitance. The WLC was optimized and studied regarding radiofrequency fields and interaction to the birdcage coil (BC) by electromagnetic simulations. The manufactured WLC was characterized by on-bench measurements and in vivo and phantom study in comparison to a standard cable-connected receive-only coil.RESULTS: The WLC placed into BC gave the measured B1+ increase of the latter by 8.6 times for the same accepted power. The phantom and in vivo wrist imaging showed that the BC in receiving with the WLC inside reached equal or higher signal-to-noise ratio than the conventional clinical setup comprising the transmit-only BC and a commercial receive-only flex-coil and created no artifacts. Simulations and on-bench measurements proved safety in terms of specific absorption rate and reflected transmit power.CONCLUSIONS: The results showed that the proposed WLC could be an alternative to standard cable-connected receive coils in clinical magnetic resonance imaging. As an example, with no cable connection, the WLC allowed wrist imaging on a 1.5 T clinical machine using a full-body BC for transmitting and receive with the desired signal-to-noise ratio, image quality, and safety.

AB - PURPOSE: Design and characterization of a new inductively driven wireless coil (WLC) for wrist imaging at 1.5 T with high homogeneity operating due to focusing the B1 field of a birdcage body coil.METHODS: The WLC design has been proposed based on a volumetric self-resonant periodic structure of inductively coupled split-loop resonators with structural capacitance. The WLC was optimized and studied regarding radiofrequency fields and interaction to the birdcage coil (BC) by electromagnetic simulations. The manufactured WLC was characterized by on-bench measurements and in vivo and phantom study in comparison to a standard cable-connected receive-only coil.RESULTS: The WLC placed into BC gave the measured B1+ increase of the latter by 8.6 times for the same accepted power. The phantom and in vivo wrist imaging showed that the BC in receiving with the WLC inside reached equal or higher signal-to-noise ratio than the conventional clinical setup comprising the transmit-only BC and a commercial receive-only flex-coil and created no artifacts. Simulations and on-bench measurements proved safety in terms of specific absorption rate and reflected transmit power.CONCLUSIONS: The results showed that the proposed WLC could be an alternative to standard cable-connected receive coils in clinical magnetic resonance imaging. As an example, with no cable connection, the WLC allowed wrist imaging on a 1.5 T clinical machine using a full-body BC for transmitting and receive with the desired signal-to-noise ratio, image quality, and safety.

KW - metasolenoid

KW - SNR enhancement

KW - split-loop resonators

KW - transmit efficiency

KW - wireless coil

KW - Wrist/diagnostic imaging

KW - Humans

KW - Signal-To-Noise Ratio

KW - Radio Waves

KW - Equipment Design

KW - Image Processing, Computer-Assisted/methods

KW - Magnetic Resonance Imaging/instrumentation

KW - Phantoms, Imaging

KW - Wireless Technology/instrumentation

UR - https://www.scopus.com/pages/publications/85041545531

U2 - 10.1002/mrm.27140

DO - 10.1002/mrm.27140

M3 - Article

C2 - 29427296

SN - 0740-3194

VL - 80

SP - 1726

EP - 1737

JO - Magnetic Resonance in Medicine

JF - Magnetic Resonance in Medicine

IS - 4

ER -

Volumetric wireless coil based on periodically coupled split-loop resonators for clinical wrist imaging

Abstract

Keywords

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