Fig. 5: 1 L ECG-AI Saliency map. | npj Digital Medicine

Fig. 5: 1 L ECG-AI Saliency map.

From: Artificial intelligence-enabled analysis of handheld single-lead electrocardiograms to predict incident atrial fibrillation: an analysis of the VITAL-AF randomized trial

Fig. 5: 1 L ECG-AI Saliency map.

Depicted is a saliency map of 1 L ECG-AI demarcating regions of the 1 L ECG waveform having the greatest influence on atrial fibrillation (AF) risk predictions. Blue shades depict the magnitude of the gradient of predicted AF risk with respect to the 1 L ECG waveform amplitude, where darker shades illustrate regions of the waveform exerting greater salience, or influence on AF risk predictions. Maps were generated using a random sample of 64 tracings from the VITAL-AF sample. An exemplar 1 L ECG is overlaid on the saliency map.

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