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Figure 1 Example of the assessment of left ventricular (LV) dyssynchrony in a normal individual. In the color-coded tissue Doppler images (TDI) (A, four-chamber view), sample volumes are placed in the basal part of the septum and lateral wall. Velocity graphs derived from the velocities measured in these sample volumes are presented in the right panel of A. In this normal individual, LV dyssynchrony is not present, as indicated by a septal-to-lateral delay in peak systolic velocity (arrow) of 0 ms. (B) The accompanying velocity encoded magnetic resonance imaging is presented. Similar to TDI, sample volumes are placed at the basal level of the septum and lateral wall. The velocity graphs are presented in panel C, confirming the absence of LV dyssynchrony (septal-to-lateral delay 0 ms).