Focal Therapy for Prostate Cancer Using HIFU

RATIONALE: Prospective trials using hemi-ablation with high intensity focused ultrasound (HIFU) (Sonablate 500) have demonstrated feasibility, safety, and encouraging functional outcomes and early cancer control with 90% of men achieving trifecta status (no erectile dysfunction, leak-free pad-free continence, cancer control). However, these trials have involved small numbers of patients with men selected for good baseline function. A multi-centre prospective trial within a larger cohort of men that better represents the patient population with prostate cancer (external validity) is required.