Figure 2.

Dyssynchrony assessment using STE. The parameters used for dyssynchrony assessment are (A) maximum time delay between peak systolic strain of two segments (usually between the anteroseptal and posterolateral walls, DT) and (B) dyssynchrony index of the LV, taken from the standard deviation of time to peak systolic strain (mapping shows time to peak values for each segment). AVC, aortic valve closure; DT, time delay in peak systolic contraction between posterior wall and anteroseptal wall.