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Abstract #3527

Evaluation of through-time radial GRAPPA for real-time cardiac MR imaging at 7 Tesla

Sascha Brunheim1,2, Sören Johst1, Stefan Maderwald1, Stefan Rietsch1,2, Stephan Orzada1, Marcel Gratz1,2, Juliane Goebel3, Kai Nassenstein3, Nicole Seiberlich4, and Harald H. Quick1,2

1Erwin L. Hahn Institute for Magentic Resonance Imaging, University Duisburg-Essen, Essen, Germany, 2High Field and Hybrid MR Imaging, University Hospital Essen, Essen, Germany, 3Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany, 4Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States

Accelerated radial data acquisition of the myocardium in combination with through-time radial GRAPPA offers the opportunity for real-time visualization of cardiac motility without the need for additional ECG or pulse wave synchronization. This is particularly useful in an ultrahigh-field MR environment where conventional gating methods in combination with cardiac dysrhythmia tend to fail. In this work, the performance of through-time radial GRAPPA against an established Cartesian k-space encoding protocol featuring pulse-triggered cine-FLASH has been evaluated and its role as an alternative for real-time cardiac 7-Tesla MR imaging is shown.

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