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Abstract #3407

Assessment of Myocardial Twist Motion by Velocity Encoded MRI in LA - Orientation

Anja Lutz1, Axel Bornstedt1, Patrick Etyngier2, Robert Manzke3, Wolfgang Rottbauer1, G. Ulrich Nienhaus4, Volker Rasche1

1University Hospital of Ulm, Ulm, BW, Germany; 2Medisys Research Lab, Philips Healthcare, Sureness, France; 3Philips Research NA, Briarcliff Manor, United States; 4Karlsruhe Institute of Technology, Karlsruhe, Germany

The rotational motion of the heart is an important parameter for the assessment of cardiac function in patients with cardiac diseases. The aim of this study was to investigate the feasibility of velocity encoded MRI to retrieve the twisting motion of the heart from 6 slices acquired in long axes geometry with equidistant radial spacing. Therefore, a black blood prepared, respiratory navigated, segmented and velocity encoded cardiac triggered gradient echo sequence was used. Maximal myocardial twisting was observed in the lateral wall after approx. 36% of the RR cycle.