Fig. 3

In healthy volunteers, negative transmural gradient of longitudinal strain (TGLS) was observed in almost all segments. The normal range of TGLS greatly varied among the segments. However, the TGLS was relatively consistent within the basal, middle, and apical levels. A significant TGLS from the base toward the apex was observed. bas: basal; ap: apical; Post: posterior; AntSept: anteroseptal; Sept: septal; Lat: lateral; Inf: inferior; Ant: anterior