Design considerations for dipole for head MRI at 10.5T

Jinfeng Tian, Russell L. Lagore, J. Thomas Vaughan

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

3 Scopus citations

Abstract

As the world's first 10.5T whole body human MRI scanner is ready for discoveries on new research frontiers, RF challenges need to be overcome to fully realize the benefits of the ultra-high MRI system. Dipole antennas were investigated with the Finite-Difference Time-Domain (FDTD) method. For best head MRI at 10.5T, results showed that dipole arrays should be long and conformal to the head geometry. A bottom ring connecting all dipole elements with adjustable capacitance can be helpful in improving RF homogeneity. RF and dielectric shielding, and dielectric pads around head may result in a dramatic rise of the Specific Absorption Rate (SAR) within head tissues.

Original languageEnglish (US)
Title of host publication2015 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages99-100
Number of pages2
ISBN (Electronic)9781479985432
DOIs
StatePublished - Oct 21 2015
EventIEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015 - Taipei, Taiwan, Province of China
Duration: Sep 21 2015Sep 23 2015

Publication series

Name2015 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015 - Proceedings

Other

OtherIEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2015
CountryTaiwan, Province of China
CityTaipei
Period9/21/159/23/15

Keywords

  • 10.5T
  • MRI
  • antenna
  • dielectric
  • dipole

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