Fig. 3

Left ventricle strain analysis by feature tracking. A Epicardial and endocardial borders, excluding the papillary muscles, were manually drawn in the end-diastolic phase in the 4-chamber, left ventricular (LV) outflow tract long-axis, short axis and 2-chamber views. B Bull´s-Eye figures representing segmental longitudinal and circumferential strain, and global peak longitudinal strain (curve) by feature tracking. LA left atrium