Fig. 2

Feature tracking analysis was performed on routine cardiac cine images. A–D, I, L In long-axis and short-axis views, the endocardial and epicardial contours were automatically detected with manual correction. E–G The deeper red and blue indicated poor heart function of the left ventricular (LV). J, M The left atrial (LA) and right ventricular (RV) strain curves were automatically constructed. H, K, N Three-dimensional model of the LV, LA, and RV myocardium