经直肠多普勒超声定量参数对前列腺结节的诊断价值

The value of quantitative paraneter measured by transrectal Doppler ultrasonograpy in diagnosis of prostate nodules

目的评价经直肠多普勒超声定量参数诊断前列腺结节良、恶性的临床应用价值。方法应用彩色多普勒超声(CDUS)和能量多普勒超声(PDUS)及彩色血流分析软件,记录52例患者共67个前列腺结节的峰值血流指数(PVI),并比较不同多普勒超声条件下前列腺良、恶性结节组间PVI的差异。并对两种方法测得的PVI行受试者工作特征(ROC)分析。结果CDUS测得32个前列腺恶性结节PVI显著高于35个前列腺良性结节[(0.38±0.16)vs.(0.24±0.19)(P<0.05)。PDUS测得前列腺恶性结节的PVI显著高于良性结节[(0.55±0.18)vs.(0.32±0.21)(P<0.05)。PDUS测得的PVI对前列腺癌的血流定量评估更具优越性。结论多普勒定量参数PVI是鉴别前列腺肿瘤良恶性的有效指标。

Objective To investigate the clinical value of transrectal color Doppler ultrasonography（CDUS）for differenciating the benign from the malignant prostate nodules.MethodsCDUS,power Doppler ultrasonography（PDUS）and the analytic software of color flow were used to record and analyze quantitatively the peak vascularization index（PVI）in 52 cases（67 prostate nodules）.Receiver operating characteristic（ROC）analysis was performed.Results Measured by CDUS,PVI of 32 malignant prostate nodules was significantly higher than that of 35 benign nodules [（0.38±0.16）vs.（0.24±0.19）]（P〈0.05）.So did the PVI measured by PDUS [（0.55±0.18）vs.（0.32±0.21）]（P〈0.05）.As a quantitative parameter to discriminate prostate cancer,PVI measured by PDUS was more effective than that measured by CDUS.Conclusion PVI measured by Doppler ultrasonography is an effective quantitative parameter for discriminating the malignant prostate nodules from the benign nodules.