Method of manufacturing a gradient coil

摘要

The present invention aims to implement a pair of gradient coils low in magnetizing force with respect to pole pieces. Upon manufacturing a pair of gradient coils each of which produces gradient magnetic fields by currents that flow through a plurality of concentric passes, the maximum radius of one of current passes for the gradient coil is set as the minimum value at which a gradient magnetic field having a magnetic field error within a predetermined allowable range can be produced.