2014 IEEE. The design of a 1.5-T superconducting magnet for open MRI for breast imaging is described. The homogeneous field region is designed to lie above the surface of the unit, so that it includes both breasts for a woman lying prone upon the surface. The magnet was designed using a novel approach to optimizing the field, and the coil structure utilizes a novel structured coil strategy that makes it possible to produce the patterns of current required in the design.