Fig. 4From: Ensemble machine learning approach for screening of coronary heart disease based on echocardiography and risk factorsa Heatmaps of contributions of 17 segments in first three PCs of peak systolic strain, systolic strain rate and time-to-peak. Column from left to right represents the first PC to the third PC respectively, and the top row represents PSS, the middle row represents SSR and the bottom row represents TP. b Bullseye plot of the AHA 17-segment modelBack to article page