Shinya Handa1, Katsumi Kose1, Tomoyuki Haishi2
1Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibraki, Japan; 2MRTechnology Inc., Tsukuba, Ibraki, Japan
A four mirror-current planes model for the magnetic circuits on magnetic field gradients produced by planar gradient coils was developed and compared with the two mirror-current planes model. The gradient field distribution measured for a 0.3 T permanent magnet showed a good agreement with that calculated from the four mirror-current planes model. It was concluded that the four mirror-current planes model was better suited to explain the effects of magnetic circuits on magnetic field gradients produced by planar gradient coils.
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