Automatic activation mapping and origin identification of idiopathic outflow tract ventricular arrhythmias.

•Automatic mapping of ventricular arrhythmias based on the onset of the bipolar EGM signal allows fast, accurate and observer-independent assessment of LATs and activation propagation.•Automatic mapping of ventricular arrhythmias based on the onset of the bipolar EGM signal allows precise identification of the early activation site area and site of origin of idiopathic outflow tract ventricular arrhythmias.•Automatic mapping of ventricular arrhythmias based on the onset of the bipolar EGM signal allows to characterize the spreading of the activation sequence of idiopathic outflow tract ventricular arrhythmias.