Objective:To explore the diagnostic value of 1. 5T MR liver acceleration volume acquisition (LAVA) dynamic contrast enhanced MR imaging( DCE-MRI) in prostate cancer and benign prostatic hyperplasia( BPH) . Methods:Collected the informations from 30 patients with prostate cancer and 30 patients with BPH of conventional MR imaging and DCE-MRI,and drawed the signal intensify-time( SI-T) curve. Evaluated the distribution characteristics of the curve of prostate cancer and BPH and the tumor size,displayed diffrence of prostate cancer conventional MR imaging and DCE-MRI. Results:The SI-T curve of prostate cancer and BPH were variety. The smaller limitation tumor in the prostate capsule had mainly rapidly ascending follow with descending curve. The bigger tumor breached the prostate capsule had mainly slowly ascending follow with plateau curve. The BPH had mainly persistently and slowly ascending curve. Conclusion:The dynamic contrast enhanced MR imaging plays a major role in the differential diagosis of prostate cancer and BPH,and in the staging of tumor.%目的：：探讨1．5T MR LAVA动态增强对前列腺癌及增生的诊断价值。方法：收集30例前列腺癌及30例前列腺增生病例的MRI平扫、增强资料，并绘制SI-T曲线。评价癌灶与增生的曲线分布特点、癌灶大小与曲线的分布特点、癌灶平扫及增强的显示差别等内容。结果：癌灶及增生的SI-T曲线具有多样性。局限在包膜内较小的癌灶以快升缓降型为主，癌灶较大突破包膜以缓升平台型为主，增生以持续缓升型为主。结论：磁共振动态增强对前列腺癌及增生的鉴别诊断及前列腺癌分期具有重要价值。
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