More than 10 years of speckle tracking echocardiography: Still a novel technique or a definite tool for clinical practice?

Speckle tracking echocardiography (STE) cannot be considered a recent technique anymore. Its application has gained growing importance over the last decade in several clinical settings, and the deformation analysis has fully entered in diagnostic algorithms and guidelines of various pathologies. STE allows to track the displacement of "speckles" in two-dimensional (2D) echocardiographic images in an angle-independent way and to assess their movement (strain) during the cardiac cycle. Its high feasibility, reproducibility, and accuracy have been widely demonstrated. In this review, we describe how STE has been applied to different aspects of the daily clinical practice, including ischemic heart diseases, heart valve disease, heart failure, and prognostication, highlighting the possible added value that strain parameters have shown over the years.