Longitudinal strain (LS) for each of the six myocardial segments in the base (A–D), mid-ventricle (E–H), and apex (I–L) slices across all patients (n = 63; A, E, I), Group 1 (n = 10; B, F, J), Group 2 (n = 17; C, G, K), and Group 3 (n = 36; D, H, L). *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001 vs. IS, assessed by one-way ANOVA followed by Tukey’s test. A, anterior; AS, anteroseptal; IS, inferoseptal; I, inferior; IL, inferolateral; AL, anterolateral. LS was expressed as the absolute value of the number.