Abstract #3527

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

Sascha Brunheim^1,2, Sören Johst¹, Stefan Maderwald¹, Stefan Rietsch^1,2, Stephan Orzada¹, Marcel Gratz^1,2, Juliane Goebel³, Kai Nassenstein³, Nicole Seiberlich⁴, and Harald H. Quick^1,2

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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