A novel reduced field-of-view technique for cardiac MRI: NoQuist

A novel cardiac magnetic resonance imaging (MRI) acceleration strategy called "NoQuist" is presented here. Using this new technique, a more sparsely sampled dynamic image sequence is correctly reconstructed without Nyquist foldover artifact by reductions in the size of the Fourier model of the k-space data for the dynamic image. It does not rely either on substitution or interpolation to arrive at a data set sufficient for reconstruction of the dynamic sequence. The proposed "NoQuist" method allows reduction of acquisition time in dynamic MRI scans by eliminating the data redundancy that is associated with the presence of static regions in the dynamic scene. A reduction of acquisition time can be achieved, asymptotically equal to the tatic fraction of the field-of-view (FOV), by omitting acquisition of a strategically selected subset of phase encoding views from a conventional equidistant Cartesian acquisition grid.