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

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

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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 languageEnglish
Title of host publicationProceedings of 2016 46th European Microwave Conference
PublisherIEEE
Publication date2016
Pages675-678
ISBN (Print)9782874870439
DOIs
Publication statusPublished - 2016
Event46th European Microwave Conference (EuMC) - London, United Kingdom
Duration: 4 Oct 20166 Oct 2016

Conference

Conference46th European Microwave Conference (EuMC)
CountryUnited Kingdom
CityLondon
Period04/10/201606/10/2016

Keywords

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

Cite this

Zhurbenko, V., Johannesson, K. S., Boer, V., & Petersen, E. T. (2016). Large field-of-view transmission line resonator for high field MRI. In Proceedings of 2016 46th European Microwave Conference (pp. 675-678). IEEE. https://doi.org/10.1109/EuMC.2016.7824433