Phase analysis and mechanical dispersion perform equally in the detection of myocardial scar on cine magnetic resonance imaging

Introduction Myocardial contraction is a cyclic event. Contraction delay can be described in terms of mechanical dispersion or phase delay of velocity, displacement and local deformation (strain) of segments in apical views of the left ventricle. Our hypothesis was that an increase in the standard deviation of phase would be seen as a consequence of myocardial scar and that this effect could be comparable to mechanical dispersion.