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Abstract #0276

Interleaved 23Na/1H MRI of the human heart at 7 Tesla

Laurent Ruck1, Tobias Wilferth1, Lena V. Gast1, Tanja Platt2, Denise Lichthardt1, Christian R. Meixner1, Andreas K. Bitz3, Titus Lanz4, Simon Konstandin5, Christoph Kopp6, Michael Uder1, and Armin M. Nagel1,2
1Institute of Radiology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany, 2Division of Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, 3Faculty of Electrical Engineering and Information Technology, University of Applied Sciences, Aachen, Germany, 4Rapid Biomedical GmbH, Rimpar, Germany, 5Fraunhofer MEVIS, Bremen, Germany, 6Department of Nephrology and Hypertension, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany


A dual-nuclear interleaved 23Na/1H MRI sequence for cardiac MRI was implemented and evaluated in phantom and in vivo measurements using a 23Na body coil in combination with two 4 Tx/8 Rx 1H arrays. The 1H arrays were operated in 1Tx mode with fixed transmit magnitude/phase setting. Compared to single-nuclear sequences, the interleaved sequence led to almost identical SNR und image intensities in phantom measurements. Furthermore, the feasibility of interleaved 23Na/1H in vivo MRI measurements at 7 T was demonstrated. The interleaved approach enables reduced acquisition times and further eliminates the need for image co-registration.

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