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Abstract #1263

Compressed Sensing accelerated 4D flow MRI using a pseudo spiral Cartesian sampling technique with random undersampling in time

Lukas M. Gottwald1, Eva S. Peper1, Qinwei Zhang1, Valentijn Q. Pronk1, Bram F. Coolen2, Pim van Ooij1, Gustav J. Strijkers2, and Aart J. Nederveen1

1Department of Radiology, Academic Medical Center, Amsterdam, Netherlands, 2Department of Biomedical Engineering & Physics, Academic Medical Center, Amsterdam, Netherlands

Clinical applications of three-dimensional time-resolved (4D) flow MRI are still hindered by long acquisition times. Using compressed sensing image reconstruction, undersampled 4D flow data may be recovered without a notable loss of image quality. In this study pseudo-spiral sampling on a Cartesian grid was implemented on a Philips 3T Ingenia system to facilitate random undersampling in time. The technique was tested under controlled conditions in a pulsatile phantom for different acceleration factors. An additional in vivo volunteer data set confirmed the stability of this technique.

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