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Abstract #2697

Real-time imaging of the heart and aorta at 7.0 T using a 16 channel bow tie antenna transceiver array

Celal Oezerdem 1 , Lukas Winter 1 , Andreas Graessl 1 , Katharina Paul 1 , Antje Els 1 , Dirk Voit 2 , Jens Frahm 2,3 , and Thoralf Niendorf 1,4

1 Berlin Ultra-High Field Facility (B.U.F.F.), MDC, Berlin, Germany, 2 Biomedizinische NMR Forschungs GmbH am Max-Planck-Institut fr biophysikalische Chemie, Gttingen, Germany, 3 DZHK (German Center for Cardiovascular Research), partner site Gttingen, Germany, 4 Experimental and Clinical Research Center, a joint cooperation between Charit Medical Faculty and the Max Delbrueck Center, Berlin, Germany

In conventional cardiac MR (CMR) breath-held 2D CINE acquisitions segmented over 10-16 heartbeats are the clinical standard for left ventricular function assesment, making the conventional CMR constrained by physiological constraints. Offsetting this shortcoming provides a strong driving force for explorations into real-time imaging of the heart. To meet this goal this work examines the applicability of free breathing real time imaging of the heart and the aorta For this purpose a sixteen channel bow tie dipole transceiver array tailored for cardiac MR at 7.0 T is employed. For comparison traditional 2D CINE FLASH imaging of the heart and aorta is performed. Our findings demonstrate that the 16 channel bow tie antenna arrays supports an extended S-I coverage using a FOV as large as 35 cm. The spatial resolution of (1.2 x 1.2 x 6.0) mm 3 and the frame rate of 30 frames per second fully meets the requirements of standardized left ventricular structure and function assessment protocols.

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