Artifacts in two-dimensional shear wave elastography of liver

Figure 1 Elastograms of a 60-year-old man with hepatitis B virus. A: Elastogram with artifacts at the bottom-left of the sampling frame, and the area of artifacts was 1.79 square centimeters; B: For the elastogram with artifacts, the Q-Box was placed in the center of the sampling frame [mean liver stiffness: 9.4 kPa, standard deviation (SD): 1.2 kPa, stability index (SI): 97%]; C: For the elastogram with artifacts, the Q-Box was placed away from the artifacts (mean liver stiffness: 8.6 kPa, SD: 0.4 kPa, SI: 97%). SD: Standard deviation; SI: Stability index.

Figure 2 Study flow diagram. 2-D SWE: Two-dimensional shear wave elastography.