Double Tuned 1H-23Na Birdcage Coils for MRI at 7 T: Performance evaluation through electromagnetic simulations

F. Maggiorelli, A. Retico, E. Boskamp, F. Robb, A. Galante, M. Fantasia, M. Alecci, M. Tosetti, G. Tiberi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aim of the present study is the electromagnetic evaluation of a 'four-ring' double-tuned (DT) birdcage coil designed for head imaging. The model consists of an inner Low-Pass (LP) birdcage coil and two externally nested High-Pass (HP) birdcage-like coils. LP and HP structures are tuned at the 23Na and 1H Larmor frequency at 7 T, respectively. Dimensional parameters are varied in order to optimize the radio frequency (RF) B1 + field homogeneity at both Larmor frequencies. Results show that B1 + field homogeneity at the 1H Larmor frequency can be considerably increased by optimizing the mutual distance between the inner and outer coil structure length. This result is particularly significant in case of MRI at 7 T, to correct for the 'intrinsically' inhomogeneous B1 + field due to the short wavelength.

Original languageEnglish
Title of host publicationMeMeA 2018 - 2018 IEEE International Symposium on Medical Measurements and Applications, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781538633915
DOIs
Publication statusPublished - Aug 16 2018
Event13th IEEE International Symposium on Medical Measurements and Applications, MeMeA 2018 - Rome, Italy
Duration: Jun 11 2018Jun 13 2018

Conference

Conference13th IEEE International Symposium on Medical Measurements and Applications, MeMeA 2018
CountryItaly
CityRome
Period6/11/186/13/18

Keywords

  • Double Tuned RF coils
  • MRI at 7 T
  • Sodium Imaging
  • UHF MRI

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Instrumentation

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    Maggiorelli, F., Retico, A., Boskamp, E., Robb, F., Galante, A., Fantasia, M., Alecci, M., Tosetti, M., & Tiberi, G. (2018). Double Tuned 1H-23Na Birdcage Coils for MRI at 7 T: Performance evaluation through electromagnetic simulations. In MeMeA 2018 - 2018 IEEE International Symposium on Medical Measurements and Applications, Proceedings [8438777] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MeMeA.2018.8438777