Clinical Study of HIFU for Localized Prostate Cancer

Inclusion Criteria: 1. Men over the age of Forty; 2. Localized prostate cancer for which transperineal template prostate biopsy or MRI targeted biopsy combined with systematic biopsy is performed; 3. Ti-T2cN0M0 disease stage; Serum psa \< 20 ng/ml; Gleason score ≤7(3+4 or 4+3 or lower); Or the researcher evaluates the medium-low risk prostate cancer within T2 stage without lymph node and distant metastasis; Treatment was performed using Sonablate® transrectal high intensity focused ultrasound (HIFU) or robot-assisted laparoscopic radical prostatectomy (RALP) Exclusion Criteria: * Either must be \"No\" or the patient cannot be enrolled. 1. The active stage accompanied by other genitourinary system infections 100 days before surgery; 2. Men who have previously received radiation therapy; 3. Laboratory-assessed abnormalities of renal function in the heart and liver prior to surgical treatment: ALT, AST, or serum alkaline phosphatase levels above the upper limit of 3-fold normal, coagulation disorders, other malignancies (history of other malignancies other than basal cell carcinoma or squamous skin carcinoma. Patients with a pre-operative history of malignancy that has not recurred in the last 5 years (superficial bladder cancer normally clears in 2 years) are permitted; 4. The presence of a metal implant/stent in the urethra; 5. Patients whose lesions were located at the anterior tip of the prostate and in front of the urethra, and other locations where the focus could not be reached or the acoustic channels were blocked by important organs; 6. Those who were considered by the investigator to be unsuitable to participate in this clinical trial (such as patients with mental or emotional problems, patients with hearing, speaking, reading, and writing disorders, and poor compliance).