中文摘要：

目的探讨前列腺癌经直肠多普勒超声影像特征与病理组织学类型的关系，为临床上的进一步诊断提供依据。方法回顾性分析20例前列腺癌患者的经直肠多普勒超声影像结果及病理组织学结果，并分析两者的关系。结果14例患者腺体内显示低回声，占70％。前列腺癌血供丰富、血流信号增强。PSV（29．1±11．2）cm／s，RI（0．83±0．09）。不典型增生2例，高分化3例，中分化5例，低分化10例。不典型增生以低回声和混合回声为主，高、中、低分化患者均以低回声为主。结论经直肠超声诊断前列腺癌具有图像清晰、分辨率高、可观察血管等优点，总结不同病理组织分型的声像学特征，能够为临床上手术前进一步的诊断提供依据。

英文摘要：

Objective To discuss relationship of image data of transrectal ultrasound and histopathological types in prostate cancer. Methods Image data and histopathological types of 20 cases with prostate cancer were retrospectively analyzed, and the relationship were studied. Results All 14 cases of gland showed hypoecho, according for 70%. Prostate cancer with rich blood supply and blood flow signal was enhancement. PSV was （29.1±11.2）cm/s,RI was （0.83±0.09）. Dysplasia was 2 cases, high differentiation was 3 cases, moderately differentiated was 5 cases, and poorly differentiated was 10 cases. Dysplasia mainly showed hypoecho and mixed echo. High,moderately and poorly differentiated all mainly showed hypoecho. Conclusion Transrectal ultrasound for prostate cancer shows image sharp- en,high-resolution and to observe blood vessels, and so on. To conclude image data of different histopathological types, can provide theory basis for clinical further diagnosis before the operation.