Imaging-guided Ventricular Tachycardia Ablation

Over the past decades important advances have been made in the field of ventricular tachycardia (VT) ablation, and as a result, VT ablation is now more widely being performed. The identification of ablation target sites still relies on electroanatomical substrate mapping, which is time-consuming, hampered by the intramural location of some scars and limited by epicardial fat. The potential of various imaging modalities to overcome these limitations have stimulated clinical electrophysiologists to perform studies on image integration during VT ablation. Imaging guidance has been used to identify, delineate and characterise the substrate for VT; to provide detailed anatomical information; to avoid ablation on coronary arteries; to delineate epicardial fat tissue; and to assess ablation lesions. In this review, reported applications and the potential advantages and limitations of different imaging modalities are discussed.