We perform MRI-guided Transurethral UltraSound Ablation (TULSA) in patients with localized prostate cancer. We can either treat the whole prostate or only a specific area of the prostate. The ablation device is inserted in the patient’s urethra. During ablation high-intensity ultrasound waves will destroy the prostate tissue. The ablation process is continuously monitored by real-time MR temperature mapping. A special balloon is inserted in the rectum to cool the rectal wall and to prevent it from heating.