Diagnostic Performance of Superb Microvascular Imaging in Differentiating Benign and Malignant Axillary Lymph Nodes

axillary lymph node, metastasis, superb microvascular imaging, ultrasonography, Doppler, AUC = area under curve, DCIS = ductal carcinoma in situ, FNA = fine needle aspiration, LN = lymph node, PDUS = power Doppler ultrasound, ROC = receiver operator characteristic, ROI = region of interest, SMI = superb microvascular imaging, US = ultrasound, VI = vascular index