Magnetic resonance system and method employing a digital squid

摘要

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.

主权项

1. A magnetic resonance system comprising:
at least one input configured to receive concurrent representations of a plurality of magnetic resonance signals emitted from an object characteristic of a spatial range of volumetric regions extending beyond a single plane; at least one sampler, each sampler being configured to produce an oversampled broadband data stream representing the concurrent representations of the magnetic resonance signals at a rate of at least 1 giga-samples per second; and at least one processor configured to:
receive the oversampled broadband data stream from the at least one sampler;process the oversampled broadband data stream dependent on at least spatial differences in magnetic resonance frequency of the respective concurrent representations of the magnetic resonant signals; andgenerate a matrix of spatial data representing the object in dependence on at least the spatial differences in magnetic resonance frequency of the respective concurrent representations of the magnetic resonant signals representing properties of the spatial range of the volumetric regions of the object.