Display of myocardial motion by projecting specific components of the 3D motion of myocardial elements on the plane of origin

The analysis and display of myocardial kinetics is generally based on a-priori assumptions about the direction of the myocardial displacement (centripetal–centrifugal) and about the identity of the myocardial segment moving along that direction. In addition, many displays are slice displays, in which the displacement of myocardial segments between slices is not taken into account. The purpose of this study was to devise an analytical tool in which the motion of myocardial elements in 3D space can be measured and then represented as projection on the original location plane, therefore eliminating artifacts from off-plane motion. Furthermore, components of the motion vectors can be reanalyzed a posteriori, e.g. for centripetal–fugal and torsion.