Fig. 2
Predictive ability of shear wave elastography (SWE) for liver fibrosis compared with blood markers. a Box-and-whisker plots of shear wave velocity (Vs) values according to the degrees of liver fibrosis. The boxes denote the interquartile range (IQR) (i.e., 25th–75th percentiles) of shear wave measurement (SWM); the lines inside the boxes denote the medians (i.e., 50th percentiles). Median (interquartile range) Vs values were measured in patients with fibrosis stage F0 (n = 7), F1 (n = 14), F2 (n = 21), F3 (n = 19), and F4 (n = 10). b Receiver-operating characteristic (ROC) curves for Vs values, FIB-4 index, platelet count, M2BPGi, hyaluronic acid, and type IV collagen 7S for the diagnosis of cirrhosis. The optimal cutoff value, sensitivity, and specificity when Vs values are used are described