Patent ID: 6469508
Filing Date: 2002-10-22
Classification: A61B,G01R,Y10T

Abstract:
A method of fabricating a coil for a magnetic resonance imaging magnet comprising the steps of:(a) providing a plurality of windings, each said winding having an axis, an inner end adjacent the axis, an outer end remote from the axis and a conductor arranged in a plurality of turns extending in a spiral between said inner end and said outer end, said windings including one or more outward windings and one or more inward windings, said turns of each outward winding being arranged such that a point moving along the turns in a first direction of rotation about the axis of the outward winding moves from the inner end towards the outer end, said 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 of the inward winding moves from the outer end towards the inner end; (b) superposing said spiral windings one above the other so that said windings are substantially coaxial with one another; and (c) electrically connecting said windings in series with one another, said connecting step including the step of forming one or more interior connections so that the inner end of one of said inward windings is connected to the inner end of one of said outward windings at each such interior connection and forming one or more exterior connections so that the outer end of one of said outward windings is connected to the outer end of one of said inward windings at each said exterior connection.