Diagnostic value of two dimensional shear wave elastography combined with texture analysis in early liver fibrosis

Figure 1 Texture analysis process. Step 1, texture analysis software was used to delineate the filling area (without filling defect area) on the raw elastic image, avoiding vascular and biliary cavities. Step 2, a texture analysis image was generated. Step 3, 4 sets of indexes were acquired from 4 different angles (0^o, 45^o, 135^o, and 180^o), including contrast, correlation, angular second moment, and homogeneity. ASM: Angular second moment.

Figure 2 Receiver operating characteristic curves. A: F0 vs F1-4 (≥ F1); B: F0-1 vs F2-4 (≥ F2); C: F0-2 vs F3-4 (≥ F3); D: F0-3 vs F4 (F4). SWE: Shear wave elastography; ASM: Angular second moment; PRE: Predictive value.