Research Article

Effectiveness of Quantitative Shear Wave Elastography for the Prediction of Axillary Lymph Node Metastasis

Table 3

Comparison of diagnostic performances of BUS and SWE.

ParametersAUC (95% CI) value (compared with BUS)

BUS0.7230 (0.6379,0.8081)
Emax0.8167 (0.7512,0.8821)0.0574
Emean0.7929 (0.7165,0.8692)0.1913
Emin0.7230 (0.6379,0.8081)1.0000
Emean-m0.8183 (0.7455,0.8910)0.0768
BUS + Emax0.7762 (0.6971,0.8553)0.0208
BUS + Emean0.7460 (0.6659,0.8261)0.4756
BUS + Emin0.7127 (0.6318,0.7936)0.7756
BUS + Emean-m0.7786 (0.7024,0.8548)0.0849

BUS, B-mode ultrasound category; SWE, shear wave elastography; AUC, area under the curve; CI, confidence interval; value is for parameter compared with the ultrasound category; Emax, maximal elasticity score of the lesion; Emean, mean elasticity score of the lesion; Emin, minimal elasticity score of the lesion; Emean-m, ratio of Emean mean of the lesions divided by Emean of surrounding muscles; BUS + Emax, combined use of Emax and BUS; BUS + Emean, combined use of Emean and BUS; BUS + Emin, combined use of Emin and BUS; BUS + Emean-m, combined use of Emean-m and BUS.