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Magnetic resonance guided focused ultrasound surgery of human prostate. A: Pre-sonification scan, catheter is visible in prostate urethra and transrectal probe is present in the rectum, filled by water. Hypointense focus in the left peripheral zone represents patient`s biopsy proven prostate cancer; B, C: Post-contrast T1-weighted images through prostate demonstrates non-enhancing ablation defect in the left peripheral zone.
