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Abstract #1183

Autocalibrated multiband CAIPIRINHA with k-t-acceleration: Towards the complete spatio-temporal coverage of the heart motion in one single breath-hold

Giulio Ferrazzi1, Jean Pierre Bassenge1,2, Johannes Mayer1, Clarissa Wink1, Alexander Ruh3, Michael Markl3,4, Bernd Ittermann1, Tobias Schaeffter1, and Sebastian Schmitter1

1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany, 2Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between the Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Berlin, Germany, 3Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States, 4Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Chicago, IL, United States

Recent developments in cardiac multiband CAIPIRINHA with autocalibration allow the simultaneous acquisition and reconstruction of multiple slices in one breathhold. Nevertheless, applications such as high resolution multi-slice cine imaging, and multi-slice three-directional velocity encoding of the myocardium, are still hindered by excessive breathhold duration.

In this study, we combine autocalibrated multiband CAIPIRINHA with k-t-acceleration to substantially accelerate data acquisition. When applied to gradient-echo and phase-contrast imaging, our technique allowed cardiac cine acquisitions at high spatial resolution (1.1mm), and three-directional velocity encoding of the myocardium, to be acquired in one breath-hold of 18 heart-beats at 2 or 3 slices, simultaneously.

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