• DocumentCode
    3676689
  • Title

    RF excitation in 7 tesla MRI systems using monofilar axial-mode helical antenna

  • Author

    M. M. Ilić;A. A. Tonyushkin;N. Šekeljić;P. Athalye;B. M. Notaroš

  • Author_Institution
    School of Electrical Engineering, University of Belgrade, Serbia
  • fYear
    2015
  • fDate
    7/1/2015 12:00:00 AM
  • Firstpage
    1346
  • Lastpage
    1347
  • Abstract
    We present a novel RF exciter for traveling-wave magnetic resonance imaging (MRI) systems based on a monofilar axial-mode helical antenna. In specific, we present a bore-extended, subject-loaded monofilar helical antenna for 7-T (ultra-high magnetic field) MRI systems. By means of rigorous full-wave electromagnetic modeling, we confirm clear advantages of the novel exciter over the existing TW excitation methods, and its excellent performance in terms of circular polarization and uniformity of the RF magnetic field in simple phantoms inside MRI bores at 7 T.
  • Keywords
    "Magnetic resonance imaging","Radio frequency","Magnetic fields","Phantoms","Helical antennas","Finite element analysis"
  • Publisher
    ieee
  • Conference_Titel
    Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on
  • Type

    conf

  • DOI
    10.1109/APS.2015.7305062
  • Filename
    7305062
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3676689