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This study examined the relationships between myocardial strain (epsilon) and strain rate (SR) data, derived from both two-dimensional (2D) speckle tracking and tissue Doppler imaging (TDI), and indices of left ventricular (LV) morphology to assess size-(in)dependence of these functional parameters.

european journal of echocardiography

Interpretation of two-dimensional and tissue Doppler-derived strain ( ) and strain rate data: is there a need to normalize for individual variability in left ventricular morphology?