Artifacts in two-dimensional shear wave elastography of liver

Table 6 Comparison of Q-Box parameters measured at different positions of the elastograms with artifacts

	Number	Q-Box in the center of the sampling frame			Q-Box away from the artifacts
		LSV	SD	SI	LSV	SD	SI
Expert	141	14.6 ± 9.5	1.7 ± 1.1	93% ± 6%	14.1 ± 9.3	0.8 ± 0.6	94% ± 7%
Novice	372	12.1 ± 9.5	1.9 ± 1.3	90% ± 7%	11.6 ± 9.4	0.9 ± 0.7	93% ± 6%

LSV: Liver stiffness value; SD: Standard deviation; SI: Stability index.