Abstract：Objective To observe the value of the acoustic radiation force impulse (ARFI) as a new method to differentiate malignant BI-RADS 4 breast lesions from benign ones.Methods A total of 292 patients with 311 breast lesions were enrolled into the study after selection. The breast lesions were examined by conventional ultrasound (US).The SWV value of these lesions was determined by virtual touch tissue quantification (VTQ), and these lesions were classified usingvirtual touch tissue imagine (VTI). Then, the SWV value and VTI were used to correct the classification of BI-RADS 4. With the pathological results as the final diagnosis,the receiver-operating characteristic curve (ROC) was drawn to evaluate the diagnostic value of SWV before and after BI-RADS 4 correction by comparing the AUC of the respective ROC curve. Results Before correction, the sensitivity, specificity, AUC of ROC curve to BI-RADS 4 breast lesions were 85%, 79.6% and 0.854, respectively, while the 95% confidence interval was 80.7%～90%. The score 4 of VTI and 4.97m/s of SWV were accepted as the optimal cut-off value and to diagnose benign breast lesions from malignant ones. After correction, the sensitivity, specificity, AUC of ROC curve to BI-RADS 4 breast lesions were 89.2%, 85.9% and 0.939, respectively, while the 95% confidence interval was 91.3%～96.5%. The difference in AUC of the respective ROC curve was statistically significant(z=5.57,P<0.01). Conclusion ARFI elastography can effectively improve the accuracy with which benign BI-RADS 4 breast lesions are distinguished from malignant ones.
尤其琴, 吴 蓉. 声脉冲辐射力弹性成像对BI-RADS4类乳腺肿块的诊断价值[J]. 解放军预防医学杂志, 2016, 34(6): 890-893.
YOU Qiqin, WU Rong. Acoustic Radiation Force Impulse in Diagnosis of Bi-Rads 4 Breast Lesions. Journal of Preventive Medicine of Chinese People's Liberation Army, 2016, 34(6): 890-893.
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