Figure 8From: Echo-driven V-V optimization determines clinical improvement in non responders to cardiac resynchronization treatmentTissue Doppler strain images in the apical 4 (top panels) and parasternal short axis views (bottom panels) at VV delay of 0 ms (A and B) and during LV pre-excitation of 40 ms (C and D). Positive systolic strain depicted by blue color in the lateral wall, basal interventricular septum and left ventricular apex is shown in A. LV pre-excitation of 40 ms abolished positive strain in the interventricular septum, caused marked reduction of positive strain in the lateral wall and left ventricular apex (C) and improved radial myocardial deformation (negative systolic strain depicted as pink and red myocardial color) in all myocardial segments (D) as well as systolic deformation in right ventricular apex and free wall (C).Back to article page