Focal MR-Guided Focused Ultrasound Treatment of Localized Low-Intermediate Risk Prostate Cancer: Feasibility Study

Objective of this feasibility trial is to assess safety and initial effectiveness of ExAblate MRgFUS in the treatment of low to intermediate risk, localized (organ confined) prostate cancer tumors. ExAblate treatment will be implemented as a focal tumor-selective therapy, directed at pre-defined volume(s)/sector(s) in the prostate, (identified as cancerous by mapping biopsy with or without multi-parametric MRI), rather than a whole gland or hemi-ablation treatment. Safety: evaluate incidence and severity of adverse events associated with ExAblate's MRgFUS focal treatment of low risk organ confined prostate cancer. The risk of ExAblate treatment-related incontinence and impotence will also be assessed in this study. Effectiveness: determine the tumor control effect of ExAblate's MRgFUS focal treatment of low risk organ-confined prostate cancer (confirmed by TRUS-guided Transperineal Mapping Biopsy results).