Patent ID: 6870453

Claim:
An MR apparatus that includes an open magnet system ( 2 , 3 ) for generating a uniform, steady magnetic field in an examination zone ( 1 ), and a quadrature coil system ( 4 , 5 ) that includes a resonator that is tuned by tuning capacitances ( 54 ) on at least one of the two sides of the examination zone that are offset in the direction of the steady magnetic field, in which the resonator is provided, on its side that faces the examination zone, with a first large-area conductor ( 51 ) and, on its side that is remote from the examination zone, with a second conductor ( 52 ) that is situated at a distance from the first conductor, the two conductors are electrically interconnected, that is, at least at the frequency at which the resonator is in resonance, and the resonator is provided with at least two terminals ( 56 ) that are distributed along the circumference in order to receive or generate RF magnetic fields that are offset in phase relative to one another.