Endo-ePIcardial Versus Endocardial Only Catheter Ablation for ISchemic Driven Ventricular Tachycardia (EPISODE VT)

Inclusion Criteria: * Status after myocardial infarction (minimum 3 months before inclusion in the study). * Documented post-infarction VT or VF. * Implantable ICD (at least 2 weeks before ablation) or CRT-D (at least 2 months before ablation). * A history of at least one from below: 1. One or more high energy interventions. 2. Three or more adequate antitachycardia pacing therapies, including one symptomatic. 3. Three or more episodes of VT in 24 hours (interrupted by ATP or shock) - electrical storm. 4. Sustained VT recorded on ECG with a cycle length longer than the ICD detection threshold. * Age between 18 and 85 years. * Signed informed consent to participate in the study. Exclusion Criteria: * Obesity with BMI \> 40 kg/m2. * Left ventricle ejection fraction \< 20%. * Pregnancy or breastfeeding. * Renal failure (eGFR \< 20 mL/min/1.73m2). * Fresh ballot thrombus in the left ventricle. * Suspicion of massive adhesions in the pericardium that may impede pericardial puncture. * Ablation of the post-infarction VT in the left ventricle in medical history. * Previous heart surgery. * Acute conditions that prevent ablation (including active infection, overt hyperthyroidism and others listed below). * Active neoplastic disease. * Heart failure with NYHA IV. * Life expectancy less than 12 months.