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Abstract #0560

Measurement of Lagrangian strain and Eulerian flow in the abdomen using Continuously Single Shot Tagged Magnetic Resonance Imaging

Andr M.J. Sprengers 1 , Matthan W.A. Caan 2 , Stijn J. Buitink 3 , Kevin M. Moerman 2 , Marije P. van der Paardt 2 , Aart J. Nederveen 2 , and Jaap Stoker 2

1 Orthopaedic Research Lab, Radboud University Medical Centre, Nijmegen, Gelderland, Netherlands, 2 Radiology, Academic Medical Centre, Amsterdam, Noord Holland, Netherlands, 3 Kernfysisch Versneller Instituut, University of Groningen, Groningen, Netherlands

Continuously tagged imaging (CTI) expands the application range of tagged imaging from cardiac research to non-repeatable motion such as motility. By sampling every tag pattern just once before refreshing, the registered information of tagline displacement in the temporal direction changes from the Lagrangian to the Eulerian perspective. This study shows how, analogous to conventional triggered tagged imaging, complementary measures can be extracted from tagline variation in spatial and temporal direction. The two measures were demonstrated in a simulated CTI acquisition in a numerical Shepp-Logan phantom and applied to bowel motion during free breathing in one healthy volunteer.

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