Large field-of-view transmission line resonator for high field MRI

Vitaliy Zhurbenko; Kristjan Sundgaard Johannesson; Vincent Boer; Esben Thade Petersen

doi:10.1109/EuMC.2016.7824433

Large field-of-view transmission line resonator for high field MRI

Vitaliy Zhurbenko
, Kristjan Sundgaard Johannesson
, Vincent Boer
, Esben Thade Petersen

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

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Abstract

Transmission line resonators is often a preferable choice for coils in high field magnetic resonance imaging (MRI), because they provide a number of advantages over traditional loop coils. The size of such resonators, however, is limited to shorter than half a wavelength due to high standing wave ratio, which leads to inhomogeneous field distribution along the resonator. In this work, it is demonstrated that the resonator length can be extended to over half a wavelength with the help of series capacitors. The approach allows for reduced standing wave ratio and improved field homogeneity. Achieved magnetic field distribution is compared to the conventional transmission line resonator. Imaging experiments are performed using 7 Tesla MRI system. The developed resonator is useful for building coils with large field-of-view.

Original language	English
Title of host publication	Proceedings of 2016 46th European Microwave Conference
Publisher	IEEE
Publication date	2016
Pages	675-678
ISBN (Print)	9782874870439
DOIs	https://doi.org/10.1109/EuMC.2016.7824433
Publication status	Published - 2016
Event	46th European Microwave Conference - London, United Kingdom Duration: 4 Oct 2016 → 6 Oct 2016 Conference number: 46 https://ieeexplore.ieee.org/xpl/conhome/7805383/proceeding

Conference

Conference	46th European Microwave Conference
Number	46
Country/Territory	United Kingdom
City	London
Period	04/10/2016 → 06/10/2016
Internet address	https://ieeexplore.ieee.org/xpl/conhome/7805383/proceeding

Keywords

Capacitors
Coils
Power transmission lines
Current distribution
Magnetic resonance imaging
Loading
Magnetic fields
TEM coil
MRI coil
Transmission line

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10.1109/EuMC.2016.7824433

MRIcoil v3Accepted author manuscript, 490 KB

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title = "Large field-of-view transmission line resonator for high field MRI",

abstract = "Transmission line resonators is often a preferable choice for coils in high field magnetic resonance imaging (MRI), because they provide a number of advantages over traditional loop coils. The size of such resonators, however, is limited to shorter than half a wavelength due to high standing wave ratio, which leads to inhomogeneous field distribution along the resonator. In this work, it is demonstrated that the resonator length can be extended to over half a wavelength with the help of series capacitors. The approach allows for reduced standing wave ratio and improved field homogeneity. Achieved magnetic field distribution is compared to the conventional transmission line resonator. Imaging experiments are performed using 7 Tesla MRI system. The developed resonator is useful for building coils with large field-of-view.",

keywords = "Capacitors, Coils, Power transmission lines, Current distribution, Magnetic resonance imaging, Loading, Magnetic fields, TEM coil, MRI coil, Transmission line",

author = "Vitaliy Zhurbenko and Johannesson, \{Kristjan Sundgaard\} and Vincent Boer and Petersen, \{Esben Thade\}",

year = "2016",

doi = "10.1109/EuMC.2016.7824433",

language = "English",

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AU - Petersen, Esben Thade

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N2 - Transmission line resonators is often a preferable choice for coils in high field magnetic resonance imaging (MRI), because they provide a number of advantages over traditional loop coils. The size of such resonators, however, is limited to shorter than half a wavelength due to high standing wave ratio, which leads to inhomogeneous field distribution along the resonator. In this work, it is demonstrated that the resonator length can be extended to over half a wavelength with the help of series capacitors. The approach allows for reduced standing wave ratio and improved field homogeneity. Achieved magnetic field distribution is compared to the conventional transmission line resonator. Imaging experiments are performed using 7 Tesla MRI system. The developed resonator is useful for building coils with large field-of-view.

AB - Transmission line resonators is often a preferable choice for coils in high field magnetic resonance imaging (MRI), because they provide a number of advantages over traditional loop coils. The size of such resonators, however, is limited to shorter than half a wavelength due to high standing wave ratio, which leads to inhomogeneous field distribution along the resonator. In this work, it is demonstrated that the resonator length can be extended to over half a wavelength with the help of series capacitors. The approach allows for reduced standing wave ratio and improved field homogeneity. Achieved magnetic field distribution is compared to the conventional transmission line resonator. Imaging experiments are performed using 7 Tesla MRI system. The developed resonator is useful for building coils with large field-of-view.

KW - Capacitors

KW - Coils

KW - Power transmission lines

KW - Current distribution

KW - Magnetic resonance imaging

KW - Loading

KW - Magnetic fields

KW - TEM coil

KW - MRI coil

KW - Transmission line

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DO - 10.1109/EuMC.2016.7824433

M3 - Article in proceedings

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PB - IEEE

T2 - 46th European Microwave Conference

Y2 - 4 October 2016 through 6 October 2016

ER -

Large field-of-view transmission line resonator for high field MRI

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