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Abstract #3790

Design of Gradient & Shim Coils for a Head-Only, Vertical, HTS MRI System

Michael Stephen Poole1, Hector Sanchez Lopez1, Stuart Crozier1, Iwao Nakajima2, Shin-Ichi Urayama3

1ITEE, University of Queensland, Brisbane, QLD, Australia; 2Takashima Seisakusho Co., Ltd., Tokyo, Japan; 3Human Brain Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan

Gradient and shim coils were designed for a high-temperature superconductor magnet system. Particular attention was paid to minimisation of the eddy currents generated in the cryostat of the experimental magnet. The constrained space and requirement for wide wire spacing in the design dictated the use of minimax current density technique which more than doubled the efficiency of the transverse gradient coils.