Fig. 6From: Comparison of strain parameters in dyssynchronous heart failure between speckle tracking echocardiography vendor systemsBland-Altman plots of all strain parameters, comparing Philips QLAB and TomTec 2DCPA derived results. Each column represents either results obtained from the total LV or from the separate septal or lateral wall. On each x-axis the average result of the two techniques is given per patient, while on the y-axis the difference is given. 4CH: apical four chamber view, TTPfirst: time to first peak, TTPmax: time to maximal peakBack to article page