经直肠彩色多普勒血流显像在前列腺增生症和前列腺癌中的应用

The value of transrectal color Doppler flow image in diagnosis of benign prostatic hyperplasia and prostate cancer

目的：探讨经直肠彩色多普勒对前列腺增生症（BPH）和前列腺癌（PCa）的应用价值。方法：应用经直肠彩色多普勒血流显像（CDFI）对53例BPH、14例PCa和18例正常对照者进行系统的检查和分析。结果：BPH和PCa的内部血流信号均有明显增加，BPH内、外腺结构清晰，CDFI以对称性内腺血流增多为主要特征，PCa则病灶及外侵部位均可见明显血流信号，低回声区血流变化多样化，晚期病例可见明显的血流分布异常。对比两者的阻力指数、收缩期血流峰值等重要血流参数，差异无显著性意义。结论：BPH和PCa内部CDFI的血流变化都具有各自的分布特性，在经直肠灰阶超声的基础上结合CDFI检测，将有利于提高超声对BPH和PCa的诊断和鉴别能力。

Purpose:To evaluate the value of transrectal color Doppler in benign prostatic hyperlasia (BPH) and prostate cancer. Method: 18 normal subjects, 53 BPH and 14 prostate cancer cases were studied by transrectal color Doppler flow image (CDFI).Results:CDFI reveals a marked increase in blood flow of BPH and prostate cancer. In BPH, the flow signals mostly occurrd in the inner or central gland, and it was symmetric without an obvious focus. In prostate cancer, it was depicted with obviously abnormal flow within and around the cancer lesion or hypoechoic nodule. But there were no statistically significant differences in the resistive indexes between BPH and prostate caner.Conclusion:Transrectal color Doppler scanning could delineate lesions that difficult to see at gray-scale scanning, which had a little additional value over gray-scale scanning alone in diagnosis of prostatic disease.