RecruitingDevice studySafety and Performance Assessment of the Sphere-9™ Catheter and Affera™ Ablation System for the Treatment of Ventricular Tachycardia (Sphere-9 VT EFS)Sphere-9 VT EFS is a prospective, multi-center, non-randomized, unblinded feasibility study. Adult subjects with recurrent, sustained, scar-related monomorphic ventricular tachycardia will be enrolled and treated with the Sphere-9 Catheter and Affera Ablation System.