Subject-specific knee SAR prediction using a degenerate birdcage at 7T

Vito Gagliardi, Alessandra Retico, Laura Biagi, Giacomo Aringhieri, Virna Zampa, M. R. Symms, Gianluigi Tiberi, Michela Tosetti

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

Abstract

We performed a study to predict global and local subject-specific Specific Absorption Rate (SAR) exposure in 7T Musculoskeletal (MSK) acquisition sequences. Such prediction, that is not available in current Magnetic Resonance (MR) exams, is possible combining sequences SAR exposure simulated on the generic anatomical model with subject-specific measured B+ 1 maps. The procedure has been implemented with a degenerate birdcage coil specifically designed for knee exams. Results show a good agreement between simulated B+ 1 and B+ 1 magnitude measure in-vivo, while values of global and local SAR calculated are below the recommended limit, respectively 8 W/kg and 20 W/kg.

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

  • B maps
  • Magnetic Resonance
  • Multiphysics simulations
  • SAR
  • Ultra High Field

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Instrumentation

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  • Cite this

    Gagliardi, V., Retico, A., Biagi, L., Aringhieri, G., Zampa, V., Symms, M. R., Tiberi, G., & Tosetti, M. (2018). Subject-specific knee SAR prediction using a degenerate birdcage at 7T. In MeMeA 2018 - 2018 IEEE International Symposium on Medical Measurements and Applications, Proceedings [8438709] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MeMeA.2018.8438709