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Abstract #3800

Left Ventricular Asynchrony Quantification by Means of Myocardial Displacement Derived from Velocity Encoded MRI

Jan Paul1, Anja Lutz1, Peter Bernhardt1, Patrick Etyngier2, Wolfgang Rottbauer1, Volker Rasche1

1Department of Internal Medicine II, University Hospital of Ulm, Ulm, Baden-Wrttemberg, Germany; 2Medisys Research Lab, Philips Healthcare, Sureness, France

Many motion parameters obtained from tagged MRI data have been applied previously to quantify motion abnormalities, for decreasing the non-responder rate of about 30 % in Cardiac Resynchronization Therapy (CRT).

Keywords

abnormal abnormalities acceleration acquisition additional alternating amplitude analyze analyzed anterior apex apical applied arrows assumptions asynchronous asynchrony axis background baden basal basis black blood blue body card cardiac channel circulation circumferential coefficient coil compute computed correction correlation decreasing delay derived deviation deviations dilated displacement distinction distinguish duration encoded equatorial error example fail female field formula gradient healthy heart helm hospital indicate inferior internal interval investigated larger lateral magma magnitude male many mapping matrix maximal measured medicine minutes model motion myocardial navigated needed nominal onset outcome overlap patients patterns peak peter prediction previously principle pulses quantification quantify radial reasonable reduced regarding regional relevant resolution responder resynchronization rotation scanner segment segmentation segmented segments sense shape short significances slice smaller smoothing strain suffering sureness table tagged temporal therapy tissue track tracked tracking trans twisting uniformity variance variation vector vectors velocities velocity ventricle ventricular volunteer volunteers wall whereas whole wise years