Single-Port Transvesical Partial Prostatectomy Versus High Intensity Focused Ultrasound

Inclusion Criteria: * Subjects must have histologically or cytologically: Biopsy-confirmed prostate cancer, stage T1a, T2a, T2b, or T2c prostate cancer using MRI staging, with a region of interest (ROI) PIRADs grade 3 or greater, Serum PSA 10 ng/ml or less, Region of interest on MRI of grade 3 or greater * The MRI performed must include at least: * A T2-weighted sequence in sections ≤ 4 mm, centered on the prostate and seminal vesicles, at least in the axial plane. Alternatively, a 3D T2-weighted sequence can be realized, * A diffusion sequence of ≤ 4 mm slice in the axial plane. An ADC card will be provided and calculated from at least two values of b, the maximum value of b being ≥ 600 s / mm2, * A dynamic sequence after gadolinium injection. It will be a sequence of echo T1-weighted gradient of slice ≤ 4 mm, centered on the prostate and seminal vesicles in the axial plane, with or without fat saturation. A first series will be performed without contrast injection, and will be repeated iteratively for the arrival of a bolus of gadolinium chelates. The time resolution (that is to say, the acquisition time of one dynamic series will be ≤ 20 seconds). The number of chained dynamic series is calculated so that the total length of the dynamic acquisition be at least 3 minutes * A total dose of 0.1 mmol / kg of gadolinium chelate will be injected at a rate of 3-4 mL / s by using an automatic injector, in a vein of the hand of the forearm or elbow. * If necessary, subtracted imag…