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Abstract #0461

Natively Fat-Suppressed Fast Interrupted Steady State (FISS) for 5D Whole Heart Imaging at 1.5 and 3T

Jessica AM Bastiaansen1, Davide Piccini1,2, Lorenzo Disopra1, Christopher W Roy1, Jérôme Yerly1,3, Robert R Edelman4,5,6, Ioannis Koktzoglou4,5,6, and Matthias Stuber1,3

1Radiology, UNIL-CHUV, Lausanne, Switzerland, 2Advanced Clinical Imaging Technology, Siemens Healthcare AG, Lausanne, Switzerland, 3Center for Biomedical Imaging, Lausanne, Switzerland, 4Department of Radiology, NorthShore University HealthSystem, Evanston, IL, United States, 5The University of Chicago Pritzker School of Medicine, Chicago, IL, United States, 6Northwestern University Feinberg School of Medicine, Chicago, IL, United States

Fast interrupted steady state (FISS) sequences provide bSSFP signal contrast and concomitant fat signal suppression. In this work, 3D radial FISS was implemented as part of a respiratory self-gated free-breathing cardiac and respiratory motion-resolved 5D imaging framework. Its capabilities for fat suppression were tested and characterized at both 1.5 and 3T. Combined with a XD-GRASP reconstruction, FISS offers a versatile alternative for motion-resolved fat suppressed high-resolution whole-heart anatomical and functional cine imaging with a scan time as low as 8 minutes.

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