Figure 3.

Examples of 12‐lead ECGs of premature ventricular complexes from different LV sites, as corroborated by successful focal ablation. (A) shows 12‐lead ECG patterns of common ventricular arrhythmia origins in patients without SHD [1‐9] from the left ventricle. All leads are displayed at the same amplification and sweep speed. These locations are illustrated in (B) based on 3D reconstruction of a cardiac computed tomography using the MUSIC software that was developed at the University of Bordeaux. The reconstruction shows an anterolateral view of the left ventricle, aorta, and left atrium. Also shown are the coronary arteries (red), the coronary venous system (blue), and the phrenic nerve (green). Abbreviations: AIV, anterior interventricular vein; AL PAP, anterolateral papillary muscle; AMC, aortomitral continuity; ECG, electrocardiogram; GCV, great cardiac vein; ant. MA, anterior mitral valve annulus; PM PAP, posteromedial papillary muscle; R/L, right‐left; SHD, structural heart disease; SoV, sinus of Valsalva