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Measured cardiac strains in healthy adults (N=30). (A) Circumferential (Ecc) and radial strain (Err) are calculated from DENSE using 2D displacement encoding in a short-axis view at base, mid, and apex levels. (B) Longitudinal strain (Ell) was calculated from DENSE using 2D displacement encoding in long axis 2-, 4-, and 3-chambers views. The red dashed line provides a −0.15 strain reference.
