Extended Data Fig. 5: Variation in echocardiogram video quality and relationship with EchoNet-Dynamic model performance.
From: Video-based AI for beat-to-beat assessment of cardiac function
a, b, Representative quintile video frames are shown with the respective mean pixel intensity (a) and the s.d. of the pixel intensity (b) compared with the mean absolute error of the ejection fraction prediction of EchoNet-Dynamic (EF MAE) and the Dice similarity coefficient for segmentation of the left ventricle (LV DSC). Box plots show the median as a thick line, the 25th and 75th percentiles as upper and lower bounds of the box, and whiskers extend to 1.5× the interquartile range from the median. n = 1,277.
