Analysis of a magnetic resonance imaging antenna inside an RF shield

Hisaaki Ochi, Etsuji Yamamoto, Kunio Sawaya, Saburo Adachi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Optimization of an antenna for magnetic resonance imaging (MRI) requires an accurate analysis of antennas located inside a conducting cylindrical RF shield. A Galerkin‐moment method analysis which can be used for an arbitrary‐shaped shield is used. The surface current on a conducting plane is expanded by means of surface patch segments based on Richmond's method. Numerical results are compared with measured input impedance, which confirms the validity of the proposed method. Furthermore, a relation between the dimension of shield and the sensitivity of the antenna is discussed theoretically.

Original languageEnglish
Pages (from-to)37-45
Number of pages9
JournalElectronics and Communications in Japan (Part I: Communications)
Volume77
Issue number1
DOIs
Publication statusPublished - 1994 Jan

Keywords

  • Magnetic resonance imaging
  • RF shield
  • Richmond's method
  • antenna
  • surface patch segment

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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