TABLE 1.

Inclusion and exclusion criteria.

Inclusion criteria	1. Patients with structural heart disease and monomorphic VT refractory to optimal medical therapy and previous RFA attempts (minimum of one attempt RFA)
	2. Patients with contraindications to conventional ablation or not suitable for any non-interventional approach, refusing any surgical ablative attempt; or patients who have already undergone RFA with arrhythmogenic focus refractory to previous ablation procedures
	3. Age >18 years
	4. Candidates not suitable for heart transplantation
	5. LVEF >20%
	6. ICD implant
	7. Signed informed consent
	8. Life expectation >1 year in absence of VT
Exclusion criteria	9. ICD interrogation demonstrating polymorphic VT
	10. Patients with INTERMACS class >4
	11. Patients with LVADs
	12. Patients with ongoing neoplastic disease
	13. Previous thoracic RT with cardiac involvement
	14. Active myocardial ischemia
	15. Cardiac revascularization <120 days
	16. NYHA IV
	17. Pregnant women