Speckle-tracking strain imaging, particularly Global Longitudinal Strain (GLS), has evolved from a research measure into a routine clinical necessity. Whether assessing subclinical cardiotoxicity in oncology, monitoring early heart failure, or evaluating complex valvular disease, myocardial deformation metrics provide insight into cardiac function that traditional Ejection Fraction (EF) cannot match. Even with strong clinical evidence and clear guideline support, many echocar