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Abstract #1299

MR Imaging of Cardiac Wall-Motion at 1.5T and 7T: SNR and CNR Comparison

Stefan Maderwald1,2, Kai Nassenstein, 12, Stephan Orzada1,2, Lena C. Schfer1,2, Mark Oehmigen1, Andreas K. Bitz1,2, Oliver Kraff1,2, Irina Brote1,2, Susanne C. Ladd1,2, Mark E. Ladd1,2, Harald H. Quick1,3

1Erwin L. Hahn Institute for Magnetic Resonance Imaging, Essen, Germany; 2Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany; 3Institute of Medical Physics, Friedrich-Alexander-University Erlangen-Nrnberg, Erlangen, Germany

Increased SNR and enhanced soft tissue contrasts are anticipated for 7T high-field MRI in comparison to 1.5T. The expected increases in SNR and CNR are of particular interest for high-resolution cardiac MR applications in humans. After addressing some of the 7T related transmit/receive problems, five healthy volunteers were imaged at 1.5T and 7T to measure and to compare SNR and CNR of cardiac function sequences along the short axis. It can be concluded that with the demonstrated increases in SNR and CNR, 7T cardiac function MRI with spoiled gradient echo at 7T outperforms cardiac function MRI with SSFP at 1.5T.