Patent ID: 6320382
Filing Date: 2001-11-20
Classification: G01R

Abstract:
A coil for producing a z-axis magnetic field gradient for magnetic resonance analysis, comprising:a) a flexible insulative substrate sheet formed by monotonic flexure to produce a lateral surface spaced about said Z-axis;b) a first conductive z-axis gradient coil pattern formed on said substrate sheet, comprisinga plurality of pairs of tangential leads for generating said z-axis magnetic field gradient, anda plurality of first longitudinal leads interconnecting said tangential leads;c) at least one conductive via extending through said substrate sheet and electrically connected to said first coil pattern; andd) a second conductive coil pattern formed on said substrate sheet on a side opposite said first pattern, said second coil pattern being electrically connected to said at least one conductive via and comprising a plurality of second longitudinal leads positioned to substantially cancel a magnetic field produced by said plurality of first longitudinal leads.