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Abstract #4608

Free-Breathing Cardiac Black Blood Imaging using 1D Navigator Driven Reconstruction

Maelene Lohezic1,2, Brice Fernandez1,2, Damien Mandry2,3, Jacques Felblinger2,4, Pierre-Andr Vuissoz2,5

1Global Applied Science Laboratory, GE Healthcare, Nancy, France; 2IADI Lab., Nancy-Universit, Nancy, France; 3CHU de Nancy, Nancy, France; 4CIT801, INSERM, Nancy, France; 5U947, INSERM, Nancy, France

High resolution black-blood imaging is difficult to obtain due to long acquisition time incompatible with breath hold. Free-breathing approaches use either respiratory self gating techniques based on navigators or motion compensated reconstruction. We propose here to combine both approaches by using respiratory motion compensated reconstruction driven by 1D navigators. Results are comparable to those obtained when the reconstruction is driven by external sensors, without the need for additional recording hardware, and further improved when both sources of motion information are taken into account. Results have been obtained on 256x256 acquisitions but can be extended to higher resolutions.