Combining Nonrigid Motion Correction and Partial Fourier for 3D High Resolution Cardiac Imaging

Freddy Odille¹, ², Anne Menini¹, ², Pierre-Andr Vuissoz¹, ², Laurent Bonnemains¹, ³, Damien Mandry¹, ², Jacques Felblinger¹, ⁴

The combination of partial Fourier acquisition with motion-compensated reconstruction schemes is investigated. Similar to SENSE, such generalized reconstructions can be modified to include a phase constraint and therefore deal with asymmetric k-space sampling. However partial Fourier is sensitive to the construction of a good low resolution phase map from the central part of k-space, which may also be corrupted by motion. Here we propose to build a motion-compensated phase map using the GRICS motion correction framework. The technique was tested on volunteers with a free-breathing high resolution 3D sequence used clinically for myocardial viability assessment.