Results: Among the 26 patients, 10 were diagnosed as having BA. Of the hepatobiliary laboratory biomarkers, only the gamma-glutamyl transferase level was significantly higher in patients with BA than in those without BA (p = 0.004). There were significant differences in the positive findings of triangular cord signs (p = 0.014) and liver elasticity measured by SWE (p = 0.004). According to the receiver operating characteristic curve analysis, liver elasticity demonstrated a sensitivity of 90%, a specificity of 75%, a positive predictive value of 69.2%, and a negative predictive value of 92.3%. The sensitivity and negative predictive value of liver elasticity were relatively higher than the other ultrasonographic results.