A coil system particularly for a wrist for use in an NMR imaging system comprises first and second planar U-shaped rectangular parallel coils. The extended legs of the U-shapes are interconnected to form third and fourth rectangular U-shaped planar coils oriented normal to the plane of the first and...http://www.google.com/patents/US5057777?utm_source=gb-gplus-sharePatent US5057777 - Quadrature coil construction
