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Abstract #1222

Real-Time Cardiac Imaging at 7T Using a 24-Channel Cardiac Coil

Stefan Maderwald1, Stephan Orzada2, 3, Sren Johst2, 3, Lena C. Schfer2, 3, Anja Fischer, 23, Thomas Schlosser3, Mark E. Ladd1, 3, Kai Nassenstein, 23

1Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen , Essen, Germany; 2Erwin L. Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany; 3Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany

Real-time sequences for cardiovascular magnetic resonance (CMR) at ultrahigh field strengths (≥7 Tesla) could alleviate the need for a robust trigger signal, which fails in a large number of cases due to magneto-hydrodynamic effects. For signal transmission and reception a new custom-built 8 ch Tx / 24 ch Rx coil was used. The pulse sequence is based on a strongly undersampled radial FLASH sequence which is reconstructed with a sliding window approach. Cine-like images were acquired with a temporal resolution between 6 and 106 ms. Acceptable image quality was found for a temporal resolution of 49 ms per image.

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