目的探讨前列腺癌术前分期中MRI的价值。方法分析经手术或穿刺活检病理证实的前列腺癌43例MRI资料,并与手术病理对照,分析各期中MRI的表现。结果 43例中,前列腺形态规则,表面光滑,T2WI外周带内可见低信号,病灶局限于前列腺内者7例,形态不规则,表面不光滑,突破包膜,侵犯精囊腺、前列腺旁血管神经束、提肛肌和膀胱者17例,盆腔淋巴结及骨转移者19例。结论与其他影像检查相比较,MRI对前列腺癌的分期起重要作用,特别是显示淋巴结和骨转移有其独特优势,在前列腺癌评估中有重要价值。 Objective To investigate the value of MRI in preoperative staging of prostate cancer. Methods The MRI data of 43 cases of prostate cancer proved by pathology or biopsy were analyzed and compared with the surgical pathology. The MRI findings of each stage were analyzed. Results In 43 cases, the morphology of the prostate was regular and the surface was smooth. In the peripheral zone of T2WI, low signal was observed. In 7 cases, the lesions were confined to the inside of the prostate. The morphology was irregular and the surface was not smooth. , Levator ani muscle and bladder in 17 cases, pelvic lymph nodes and bone metastases in 19 cases. Conclusion Compared with other imaging examinations, MRI plays an important role in the staging of prostate cancer. In particular, it shows that lymph nodes and bone metastases have their unique advantages and are of great value in the evaluation of prostate cancer.