Figure 1.

Summary of the method. The workflow starts with the CMR acquisition of the anatomy of the heart and the torso (with electrode positions) and the standard 12-lead ECG (blue box). In the pre-processing phase (yellow box), a 3D anatomy of the patient is reconstructed from CMR/CT sequences. The parameter identification phase (light green box) aims at fitting the parameters of the model (CVs and EASs) to minimize the difference between recorded and simulated ECG. The reconstructed activation map was eventually validated against invasive EAM (dashed light blue box). CMR, cardiovascular magnetic resonance; CT, computed tomography; CV, conduction velocity; EASs, early activation sites; ECG, electrocardiogram.