Two-Dimensional Longitudinal Strain Assessment in the Presence of Myocardial Contrast Agents Is Only Feasible with Speckle-Tracking after Microbubble Destruction

LS assessment is most feasible without contrast. If a CA is necessary, the calculation of LS is feasible using the speckle-tracking method, if three-dimensional imaging is used as a tool for microbubble destruction 1 min after CA administration.