Fig. 4From: Comparison of strain parameters in dyssynchronous heart failure between speckle tracking echocardiography vendor systemsBland-Altman plots of dyssynchrony parameters, comparing GE Echopac and TomTec 2DCPA (left panels) and Philips QLAB and TomTec 2DCPA (right panels derived results. On each x-axis the average result of the two techniques is given per patient, while on the y-axis the difference is given., GE: General Electric, SRSsept: systolic rebound stretch of the septum, SL-delay: septal to lateral wall delay, SSI: systolic stretch indexBack to article page