Abstract #0461

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

Jessica AM Bastiaansen¹, Davide Piccini^1,2, Lorenzo Disopra¹, Christopher W Roy¹, Jérôme Yerly^1,3, Robert R Edelman^4,5,6, Ioannis Koktzoglou^4,5,6, and Matthias Stuber^1,3

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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