多普勒超声收缩期峰值与阻力指数在鉴别诊断乳腺肿瘤中的应用价值

The differential diagnostic value of Doppler ultrasound in breast tumor

目的探讨多普勒超声收缩期峰值血流速度(PSV)与阻力指数(RI)在乳腺良恶性肿瘤鉴别诊断中的价值。方法回顾分析经手术证实的120例乳腺肿瘤患者(良性46例,恶性74例)的血流参数PSV、RI,比较两者在鉴别诊断乳腺良恶性肿瘤中的敏感性、特异性和准确性。结果乳腺恶性肿瘤RI较良性肿瘤明显增高,两者差异有统计学意义,而PSV差异无统计学意义。以PSV>20cm/s,RI>0.7作为乳腺恶性肿块的判定标准,PSV与RI的诊断准确性分别为55.8%、77.5%;敏感性为50.0%、77.0%;特异度为65.2%、78.3%。联合PSV与RI两项指标其鉴别准确率为79.4%。结论彩色多普勒血流参数PSV、RI有助于乳腺良恶性肿瘤的鉴别诊断;RI的鉴别诊断价值明显优于PSV;联合两者判定可提高诊断准确性,但与单独使用RI并无明显差别。

Objective To investigate the differential diagnostic value of peak systolic velocity（PSV） and resistance index（BI） in benign or malignant berast tumors Methods PSV and BI of 120 breast tumor cases confinmed by pathology were retrospectively analyzed and the differential diagnosis value of PSV and BI between benign and malignant groups was compared. Results RI in malignant cases was statistically higher than in benign cases while PSV without statistically difference. Beganting PSV more than 20 cm/s or BI mare than 0.7 as the standard for the malignant breast tumor, the diagnostic accuracy of PSV and RI was 55.8%, 77.5% respectively, sensitivity was 50, 0%, 77.0 %, speciality was 65.2%, 78.3 % ; Regarding PSV more than 20cm/s or RI more than 0.7 as the standard, the accuracy was 79.4%. Conclusion RI is statistically superior to PSV in differential diagnosis of breast tunor. Combining these two parameters could further improve the accuracy, but there＇s no significant difference with RI alone.