Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils

Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils

Transmission lines are often used as coils in high field magnetic resonance imaging (MRI). Due to the distributed nature of transmission lines, coils based on them produce inhomogeneous field. This work investigates application of series capacitors to improve field homogeneity along the coil. The eq...

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Main Author: Vitaliy Zhurbenko
Format: Article
Language:English
Published: Hindawi Limited 2016-01-01
Series:Journal of Sensors
Online Access:http://dx.doi.org/10.1155/2016/3480965
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spelling doaj-df4b637f59cf43ed9ab65e074a75e7892020-11-24T23:23:05ZengHindawi LimitedJournal of Sensors1687-725X1687-72682016-01-01201610.1155/2016/34809653480965Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI CoilsVitaliy Zhurbenko0Technical University of Denmark, 2800 Kongens Lyngby, DenmarkTransmission lines are often used as coils in high field magnetic resonance imaging (MRI). Due to the distributed nature of transmission lines, coils based on them produce inhomogeneous field. This work investigates application of series capacitors to improve field homogeneity along the coil. The equations for optimal values of evenly distributed capacitors are derived and expressed in terms of the implemented transmission line parameters. The achieved magnetic field homogeneity is estimated under quasistatic approximation and compared to the regular transmission line resonator. Finally, a more practical case of a microstrip line coil with two series capacitors is considered.http://dx.doi.org/10.1155/2016/3480965
collection DOAJ
language English
format Article
sources DOAJ
author Vitaliy Zhurbenko
spellingShingle Vitaliy Zhurbenko
Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils
Journal of Sensors
author_facet Vitaliy Zhurbenko
author_sort Vitaliy Zhurbenko
title Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils
title_short Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils
title_full Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils
title_fullStr Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils
title_full_unstemmed Optimal Value of Series Capacitors for Uniform Field Distribution in Transmission Line MRI Coils
title_sort optimal value of series capacitors for uniform field distribution in transmission line mri coils
publisher Hindawi Limited
series Journal of Sensors
issn 1687-725X
1687-7268
publishDate 2016-01-01
description Transmission lines are often used as coils in high field magnetic resonance imaging (MRI). Due to the distributed nature of transmission lines, coils based on them produce inhomogeneous field. This work investigates application of series capacitors to improve field homogeneity along the coil. The equations for optimal values of evenly distributed capacitors are derived and expressed in terms of the implemented transmission line parameters. The achieved magnetic field homogeneity is estimated under quasistatic approximation and compared to the regular transmission line resonator. Finally, a more practical case of a microstrip line coil with two series capacitors is considered.
url http://dx.doi.org/10.1155/2016/3480965
work_keys_str_mv AT vitaliyzhurbenko optimalvalueofseriescapacitorsforuniformfielddistributionintransmissionlinemricoils
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