Speckle tracking echocardiography: A new approach to myocardial function

Figure 1 Systolic myocardial deformation after electro-mechanical activation. A: LV longitudinal strain from the apical four-chamber view: time-strain curves show a negative end-systolic strain representing myocardial shortening during systole; B: LV circumferential strain from the short axis view: time-strain curves show a negative end-systolic strain representing myocardial shortening during systole. End-systole has been identified by the AVC. At this point, we could observe the negative peak of the time-strain curves corresponding to each myocardial segment.