Hietzing Hospital 1 article published in JoVE Medicine Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction Alexandra Schratter1, Georg Delle Karth1, Reinhard Achleitner1 1Department of Internal Medicine/Cardiology, Hietzing Hospital With the following protocol, we provide an approach to Ventricular Tachycardia (VT) ablation using high density mapping with a multipolar catheter and 3D mapping system enhancing the success of the procedure.