Actively shielded gradient coil assembly for a magnetic resonance examination system

摘要

A gradient coil assembly for a magnetic resonance examination system and comprises a conical end-flange surface between the primary cylindrical surface and the shield cylindrical surface at their adjacent axial ends. Interconnecting winding portions between the primary windings and the shield windings disposed on the conical surface and serially connecting at least some of the shield windings to some of the primary windings. This tapered connection reduces the radially outward stray gradient magnetic field. The winding portions over the conical surface are largely insensitive to discretisation errors.