经直肠彩色多普勒超声对前列腺癌的诊断价值

目的 评价经直肠彩色多普勒超声诊断前列腺癌的临床价值.方法 应用经直肠彩色多普勒超声对31例前列腺癌（试验组）进行检查,同时选取31例良性前列腺增生患者为对照组,观察两组前列腺形态、病灶大小及内部回声情况,包膜的完整及周边邻近器官是否有转移灶.然后应用彩色多普勒超声观察前列腺及结节内部、周边血流分布状态、测量血管内径并记录动脉频谱的峰值,计算阻力指数.结果 前列腺癌与簇状钙化、低回声、回声不均、血流信号增强、阻力指数升高等有关,经Logistic回归分析,血流信号增强和阻力指数增高分别是前列腺癌的独立危险因素（P=0.011,OR=17.316;P=0.007,OR=14.068）.结论 经直肠彩色多普勒超声能提高前列腺癌的诊断准确率.

Value of transrectal color Doppler ultrasound in diagnosis of prostatic carcinoma

Objective To evaluate the clinical value of transrectal color Doppler ultrasound in diagnosis of prostatic carcinoma. Methods Thirty-one patients with prostatic carcinoma were examined by transrectal color Doppler ultrasound, and 31 patients with benign hyperplasia were involved as the control group. Then the shape, lesion size, internal echo of prostate, membranes and whether metastasis in surrounding organs in two groups were observed. Blood flow distribution of prostate and interior and periphery of the lesions were observed with color Doppler flow imaging （ CDFI）, the internal diameter, the peak velocity and resistance index of the artery were measured. Results Prostatic carcinoma was associated with calcification with the form of cluster, weak echoes, increased blood flow, increased resistance index, respectively. Multivariant logistic regression showed increased blood flow and increased resistance index were independent risk factors of prostatic carcinoma （ P = 0. 011, OR = 17. 316 ; P = 0. 007, OR = 14. 068）. Conclusion Transrectal color Doppler ultrasound can improve the diagnostic accurate rate of prostate cancer.