T1期限乳癌组63例,乳腺良性肿块(≤2cm)组45例,用彩色多谱勒方法检测。结果显示:1.乳腺癌组均显示有丰富血流,而良性肿块组血流信号检出率仅28.9%。2.乳腺癌组均可检出高速动脉血流,Vmax可达10cm～30cm/s,显著高于良性肿块组(5cm～15cm/s)(P值<0.001)。3.乳腺癌组动脉内RI为0.7±0.1,也明显高于良性肿块组(0.6±0.1)(P值<0.01)。以显示有丰富血流,检出高速动脉血流和RI增高作为判断乳腺癌的指标,则2-B结合CDFI可大大提高对2cm以下乳腺良恶性肿块的敏感性、特异性和准确性,对T1期乳腺癌诊断准确率可达98.4%(P值<0.01)。 There were 63 cases of T1 term breast cancer and 45 cases of benign breast tumor (≤2 cm), which were detected by color Doppler. The results showed that: 1. The breast cancer group showed abundant blood flow, while the benign tumor group blood flow signal detection rate was only 28.9%. High-speed arterial blood flow can be detected in breast cancer patients with Vmax up to 10-30 cm / s, which is significantly higher than that of benign tumor mass (5-15 cm / s) (P <0.001). In the breast cancer group, the intra-arterial RI was 0.7 ± 0.1, which was also significantly higher than that in the benign mass group (0.6 ± 0.1) (P <0.01). To show the rich blood flow, detection of high-speed arterial blood flow and RI increased as an indicator of breast cancer, 2-B combined with CDFI can greatly improve the sensitivity of breast cancer under 2cm, specificity and accuracy, T1 diagnostic accuracy of breast cancer up to 98.4% (P value <0.01).