目的 术前对前列腺癌进行明确诊断,提高诊断率。方法 应用SSA—270型彩色多普勒血流显像仪,凸阵式探头,线阵式直肠探头进行腹部及直肠前列腺扫查。结果 13例前列腺癌符合Ⅴ_A期2例(15.38％),符合Ⅴ_B期7例(53.85％);符合Ⅴ_C期4例(30.77％)。结论 应用超声经腹部及直肠可见明确地诊断前列腺癌,判定前列腺癌的分期,指导可疑部位的穿刺活检,为治疗方案的选择提供了依据。直肠探头超声检查已被认为是前列腺检查的标准方法。 Objective To confirm the diagnosis of prostate cancer before surgery and increase the diagnostic rate. Methods The SSA-270 color Doppler flow imaging system, convex array probe and linear array rectal probe were used for abdominal and rectal prostate scans. Results Twenteen of the 13 prostate cancer patients met the V_A stage in 2 cases (15.38%), 7 cases in the V_B stage (53.85%), and 4 cases in the V_C stage (30.77%). Conclusion Ultrasound can be used to diagnose prostate cancer clearly through the abdomen and rectum, determine the stage of prostate cancer, and guide the biopsy of suspicious sites, providing the basis for the choice of treatment plan. Rectal probe ultrasound has been considered as the standard method for prostate examination.