Radio frequency coil for open magnetic resonance imaging system

摘要

A quadrature coil (24) suitable for use with an open frame MRI system provides crossing pairs of arrays (32a-32d) of parallel conductor elements (34a-34d), respectively. Compact configuration is provided through use of an isolating circuit (66) for incorporating parasitic capacitances at the resonance frequency of the coil into a blocking parallel resonance. Termination of the parallel conductor elements may be accomplished by equal impedance node connectors formed from branching pairs of conductors or a triangular least resistance connection form. RF shields are provided by pairs of conductive sheets containing eddy current reducing slots aligned with the parallel conductors elements of the coil. <IMAGE>