Dielectric enhanced dipoles for MRI - Approaching the ideal current pattern

W.M.. Brink, J. Paska, J. Dai, J.H.F. van Gemert, G. Chen, G.C. Wiggins, R.F. Remis, C.M. Collins, A.G. Webb

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

2 Citations (Scopus)

Abstract

In this work we present a systematic evaluation of the potential of combining dielectric materials with an array of electric dipoles for MRI. Design parameters include the permittivity and length of a dielectric sleeve, as well as the dipole length and position of the tuning inductors. Results show that the combined approach improves transmit efficiency and SNR by ~10 to 15 % compared to an optimized dipole array without dielectric sleeve. The resulting induced current densities reflect an improved correspondence with the ideal current pattern, which explains the gains in performance.
Original languageEnglish
Title of host publicationProceedings of the 2017 International Conference on Electromagnetics in Advanced Applications (ICEAA '17)
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages1220-1223
Number of pages4
ISBN (Electronic)978-1-5090-4451-1
DOIs
Publication statusPublished - 2017
EventICEAA 2017: 19th International Conference on Electromagnetics in Advanced Applications - Verona, Italy
Duration: 11 Sep 201715 Sep 2017
Conference number: 19

Conference

ConferenceICEAA 2017
Abbreviated titleICEAA '17
CountryItaly
CityVerona
Period11/09/1715/09/17

Keywords

  • Dielectrics
  • Signal to noise ratio
  • Inductors
  • Radio frequency
  • Sensitivity
  • Permittivity

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  • Cite this

    Brink, W. M., Paska, J., Dai, J., van Gemert, J. H. F., Chen, G., Wiggins, G. C., Remis, R. F., Collins, C. M., & Webb, A. G. (2017). Dielectric enhanced dipoles for MRI - Approaching the ideal current pattern. In Proceedings of the 2017 International Conference on Electromagnetics in Advanced Applications (ICEAA '17) (pp. 1220-1223). IEEE. https://doi.org/10.1109/ICEAA.2017.8065489