Fig. 2.

Title: Measurement of SRSsept.

Legend: Example of septal rebound stretch (SRSsept) measurement. Global longitudinal deformation measured over the entire length of the septum is represented by the dash white lines. Negative slope of the deformation curve indicates shortening; positive slope indicates stretching. Systolic stretch that occurs after initial shortening defines systolic rebound stretch. If more than 1 episode of stretch occurs, the absolute amount of stretch is summed to calculate systolic rebound stretch. In this patient with high amount of SRSsept, systolic shortening is interrupted early during systole, resulting in prominent systolic stretching. Note that stretching and shortening occurring after AVC (aortic valve closure) are ignored for rebound stretch measurement.