Asymmetric, compact superconducting magnets for magnetic resonance imaging
are provided. The magnets have a homogeneous region (the "dsv") which can
be located close to one end of the magnet so as to reduce the sensation
of claustrophobia experienced by patients undergoing MRI procedures. The
magnets can be designed using a hybrid process in which current density
analysis is performed to obtain an initial coil configuration which is
then refined using non-linear optimization techniques to obtain a final
coil configuration. The hybrid method can incorporate various
constraints, including, the location and size of the dsv, the uniformity
and strength of the B.sub.0 field, stray field strengths outside of the
superconducting magnet, and field strengths within the magnet's coils.
The hybrid technique can also be used to design compact symmetric
superconducting magnets.