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Abstract #0436

Retrospectively gated CINE 23 Na imaging of the heart at 7.0 T using density-adapted 3D projection reconstruction

Ana Resetar 1 , Stefan H. Hoffmann 1 , Andreas Graessel 2 , Helmar Waiczies 3 , Thoralf Niendorf 2,4 , and Armin M. Nagel 1

1 Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, 2 Berlin Ultrahigh Field Facility, Max-Delbrueck-Center for Molecular Medicine, Berlin, Germany, 3 MRI.TOOLS GmbH, Berlin, Germany, 4 Experimental and Clinical Research Center (ECRC), Charit Campus Buch, Berlin, Germany

A retrospectively gated reconstruction routine for 23 Na-MRI of the human heart using a density-adapted 3D projection reconstruction sequence with standard and golden angle sampling scheme is presented. Different heart phases with temporal resolutions of 0.2s (5 phases) and 0.1s (10 phases) were reconstructed by filling the k-spaces retrospectively according to an acoustic trigger signal. Golden angle sampling yields a more homogeneous distribution of projections which results in reduced image artefacts and higher SNR.

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