Melki L, et al. – Here, the clinicians intended to inquire the reproducibility and angle independence of electromechanical wave imaging for the assessment of electromechanical activation during normal sinus rhythm (NSR) in healthy humans. The data showed that electromechanical wave imaging can map the electromechanical activation during NSR in human hearts in transthoracic echocardiography in vivo and results in reproducible and angle–independent activation maps.