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目的：通过分析ＢＰＨ的ＭＲＩ表现及病理类型与尿路梗阻程度的相关关系以期对临床选择治疗方案和估计预后有所帮助。方法：２４例经手术和病理证实的ＢＰＨ在术前均进行了核磁共振检查，分析其ＭＲＩ信号和体积、形态及病理类型与梗阻程度的关系。结果：球形增大，尤其中后叶为主突入膀胱及平滑肌型ＢＰＨ易导致完全性尿路梗阻。平滑肌型的Ｔ２信号均匀，腺体硬，易压迫后尿道，导致尿路梗阻；腺瘤型及混合型的Ｔ２高信号中，可见更高信号“星点”。结论：（１）ＭＲＩ对判断肥大的前列腺形态、突入膀胱情况较好；（２）根据Ｔ２信号出现高信号的同时又出现了更高信号的“星点”状的影像，并可以推测病理类型，从而为临床选择治疗方案提供帮助。
OBJECTIVE: To analyze the correlation between MRI manifestations and pathological types of urinary tract obstruction and the degree of urinary tract obstruction in order to help clinical choice of treatment plan and prognosis. Methods: Twenty - four cases of BPH proved by operation and pathology were examined by MRI before operation. The relationship between MRI signal, volume, morphology, pathology and obstruction was analyzed. Results: Spherical increase, especially in the middle and back leaves mainly into the bladder and smooth muscle type BPH easily lead to complete urinary tract obstruction. T2 smooth muscle signal homogeneous, hard gland, easy urethral compression, resulting in urinary tract obstruction; adenoma and mixed T2 high signal, showing a higher signal “star point.” Conclusions: (1) MRI is better for determining hypertrophy of prostate gland and penetrating into the bladder. (2) According to the appearance of high signal and high signal of T2 signal, a “star point” image of higher signal appears and the pathological type , So as to provide clinical treatment options.