a magnetic resonance system , comprising at least one squid , configured to receive a radio frequency electromagnetic signal , in a circuit configured to produce a pulsatile output having a minimum pulse frequency of at least 1 ghz which is analyzed in a processor with respect to a timebase , to generate a digital signal representing magnetic resonance information . the processor may comprise at least one rapid single flux quantum circuit . the magnetic resonance information may be image information . a plurality of squids may be provided , fed by a plurality of antennas in a spatial array , to provide parallel data acquisition . a broadband excitation may be provided to address a range of voxels per excitation cycle . the processor may digitally compensate for magnetic field inhomogeneities .