An Artificial Shield for MRI Birdcage Coil with Constructive Interference

K. Lezhennikova; A. Hurshkainen; M. Dubois; D. Berrahou; C. Simovski; A. Raaijmakers; P. Jomin; I. Melchakova; S. Enoch; R. Abdeddaim; S. Glybovski

doi:10.23919/EuCAP48036.2020.9135080

An Artificial Shield for MRI Birdcage Coil with Constructive Interference

K. Lezhennikova, A. Hurshkainen, M. Dubois, D. Berrahou, C. Simovski, A. Raaijmakers, P. Jomin, I. Melchakova, S. Enoch, R. Abdeddaim, S. Glybovski

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

In this contribution, an artificial shield for an MRI birdcage coil based on a cylindrical miniaturized corrugated structure is proposed. The presence of a conventional metallic shield around the birdcage resonator leads to a destructive interference of the primary magnetic field of the coil and the reflected field inside the coil (in the region of an investigated sample). At the same time, the fields constructively interfere in the region between the coil and the shield. As a result, the efficiency of the coil may be limited. The proposed artificial shield has a miniaturized corrugated structure, which demonstrates the property of a constructive interference inside the coil. It has been shown that the proposed structure placed around the birdcage coil can increase the efficiency at its resonance similarly to an ideal cylindrical magnetic wall of the same diameter.

Original language	English
Title of host publication	14th European Conference on Antennas and Propagation, EuCAP 2020
Publisher	EurAAP
Number of pages	3
ISBN (Electronic)	978-88-31299-00-8
DOIs	https://doi.org/10.23919/EuCAP48036.2020.9135080
Publication status	Published - Mar 2020
MoE publication type	A4 Conference publication
Event	European Conference on Antennas and Propagation - Copenhagen, Denmark Duration: 15 Mar 2020 → 20 Mar 2020 Conference number: 14

Publication series

Name	Proceedings of the European Conference on Antennas and Propagation
ISSN (Print)	2164-3342

Conference

Conference	European Conference on Antennas and Propagation
Abbreviated title	EUCAP
Country/Territory	Denmark
City	Copenhagen
Period	15/03/2020 → 20/03/2020

Keywords

magnetic resonance imaging
magnetic shield
Volume coil

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10.23919/EuCAP48036.2020.9135080

Cite this

Lezhennikova, K., Hurshkainen, A., Dubois, M., Berrahou, D., Simovski, C., Raaijmakers, A., Jomin, P., Melchakova, I., Enoch, S., Abdeddaim, R., & Glybovski, S. (2020). An Artificial Shield for MRI Birdcage Coil with Constructive Interference. In 14th European Conference on Antennas and Propagation, EuCAP 2020 Article 9135080 (Proceedings of the European Conference on Antennas and Propagation). EurAAP. https://doi.org/10.23919/EuCAP48036.2020.9135080

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title = "An Artificial Shield for MRI Birdcage Coil with Constructive Interference",

abstract = "In this contribution, an artificial shield for an MRI birdcage coil based on a cylindrical miniaturized corrugated structure is proposed. The presence of a conventional metallic shield around the birdcage resonator leads to a destructive interference of the primary magnetic field of the coil and the reflected field inside the coil (in the region of an investigated sample). At the same time, the fields constructively interfere in the region between the coil and the shield. As a result, the efficiency of the coil may be limited. The proposed artificial shield has a miniaturized corrugated structure, which demonstrates the property of a constructive interference inside the coil. It has been shown that the proposed structure placed around the birdcage coil can increase the efficiency at its resonance similarly to an ideal cylindrical magnetic wall of the same diameter.",

keywords = "magnetic resonance imaging, magnetic shield, Volume coil",

author = "K. Lezhennikova and A. Hurshkainen and M. Dubois and D. Berrahou and C. Simovski and A. Raaijmakers and P. Jomin and I. Melchakova and S. Enoch and R. Abdeddaim and S. Glybovski",

year = "2020",

month = mar,

doi = "10.23919/EuCAP48036.2020.9135080",

language = "English",

series = "Proceedings of the European Conference on Antennas and Propagation",

publisher = "EurAAP",

booktitle = "14th European Conference on Antennas and Propagation, EuCAP 2020",

address = "Belgium",

note = "European Conference on Antennas and Propagation, EUCAP ; Conference date: 15-03-2020 Through 20-03-2020",

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Lezhennikova, K, Hurshkainen, A, Dubois, M, Berrahou, D, Simovski, C, Raaijmakers, A, Jomin, P, Melchakova, I, Enoch, S, Abdeddaim, R & Glybovski, S 2020, An Artificial Shield for MRI Birdcage Coil with Constructive Interference. in 14th European Conference on Antennas and Propagation, EuCAP 2020., 9135080, Proceedings of the European Conference on Antennas and Propagation, EurAAP, European Conference on Antennas and Propagation, Copenhagen, Denmark, 15/03/2020. https://doi.org/10.23919/EuCAP48036.2020.9135080

An Artificial Shield for MRI Birdcage Coil with Constructive Interference. / Lezhennikova, K.; Hurshkainen, A.; Dubois, M. et al.
14th European Conference on Antennas and Propagation, EuCAP 2020. EurAAP, 2020. 9135080 (Proceedings of the European Conference on Antennas and Propagation).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - An Artificial Shield for MRI Birdcage Coil with Constructive Interference

AU - Lezhennikova, K.

AU - Hurshkainen, A.

AU - Dubois, M.

AU - Berrahou, D.

AU - Simovski, C.

AU - Raaijmakers, A.

AU - Jomin, P.

AU - Melchakova, I.

AU - Enoch, S.

AU - Abdeddaim, R.

AU - Glybovski, S.

N1 - Conference code: 14

PY - 2020/3

Y1 - 2020/3

N2 - In this contribution, an artificial shield for an MRI birdcage coil based on a cylindrical miniaturized corrugated structure is proposed. The presence of a conventional metallic shield around the birdcage resonator leads to a destructive interference of the primary magnetic field of the coil and the reflected field inside the coil (in the region of an investigated sample). At the same time, the fields constructively interfere in the region between the coil and the shield. As a result, the efficiency of the coil may be limited. The proposed artificial shield has a miniaturized corrugated structure, which demonstrates the property of a constructive interference inside the coil. It has been shown that the proposed structure placed around the birdcage coil can increase the efficiency at its resonance similarly to an ideal cylindrical magnetic wall of the same diameter.

AB - In this contribution, an artificial shield for an MRI birdcage coil based on a cylindrical miniaturized corrugated structure is proposed. The presence of a conventional metallic shield around the birdcage resonator leads to a destructive interference of the primary magnetic field of the coil and the reflected field inside the coil (in the region of an investigated sample). At the same time, the fields constructively interfere in the region between the coil and the shield. As a result, the efficiency of the coil may be limited. The proposed artificial shield has a miniaturized corrugated structure, which demonstrates the property of a constructive interference inside the coil. It has been shown that the proposed structure placed around the birdcage coil can increase the efficiency at its resonance similarly to an ideal cylindrical magnetic wall of the same diameter.

KW - magnetic resonance imaging

KW - magnetic shield

KW - Volume coil

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M3 - Conference article in proceedings

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T3 - Proceedings of the European Conference on Antennas and Propagation

BT - 14th European Conference on Antennas and Propagation, EuCAP 2020

PB - EurAAP

T2 - European Conference on Antennas and Propagation

Y2 - 15 March 2020 through 20 March 2020

ER -

An Artificial Shield for MRI Birdcage Coil with Constructive Interference

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