Figure 1

Representative figure from the TomTec platform used to determine volume-change SDI. (A and B) The software requires endocardial contours to be outlined at end-diastole and end-systole in the 4-chamber, 3-chamber and 2-chamber (not shown). The software then produces a 3-dimensional shell of the endocardial cavity that tracks the endocardial contours throughout the cardiac cycle (C). Time-volume curves are then generated that represent the time to reach minimum volume for each of the 16 segments of the LV (D).