TY - JOUR
T1 - Analysis of a magnetic resonance imaging antenna inside an RF shield
AU - Ochi, Hisaaki
AU - Yamamoto, Etsuji
AU - Sawaya, Kunio
AU - Adachi, Saburo
PY - 1994/1
Y1 - 1994/1
N2 - 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.
AB - 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.
KW - Magnetic resonance imaging
KW - RF shield
KW - Richmond's method
KW - antenna
KW - surface patch segment
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U2 - 10.1002/ecja.4410770104
DO - 10.1002/ecja.4410770104
M3 - Article
AN - SCOPUS:0027983323
VL - 77
SP - 37
EP - 45
JO - Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
JF - Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
SN - 8756-6621
IS - 1
ER -