Patent ID: 6369571
Filing Date: 2002-04-09
Classification: A61B,G01R,Y10T

Abstract:
A resistive coil for a magnetic resonance imaging static field magnet comprising a plurality of spiral windings extending around an axis, each of said plurality of windings having an inner end adjacent the axis, an outer end remote from the axis and a conductor extending in multi-turn spiral between said inner end and said outer end, said plurality of windings including one or more outward windings and one or more inward windings, turns of each outward winding being arranged such that a point moving along the turns in a first direction of rotation about the axis moves from said inner end towards said outer end, turns of each said inward winding being arranged so that a point moving along the turns in said first direction of rotation about the axis moves from said inner end towards said outer end, said plurality of windings being stacked, one above the other along said axis, said plurality of windings being electrically connected in series with one another, the electrical connections including one or more interior connections, said inner end of one of said inward windings being connected to said inner end of one of said outward windings at each such interior connection.