Study of detection times for liver stiffness evaluation by shear wave elastography

Table 1 Comparison of liver stiffness values obtained from different valid measurements of shear wave elastography in patients with chronic hepatitis B at different pathological stages

Stage	n	1 VM (kPa)	2 VMs (kPa)	3 VMs (kPa)	5 VMs (kPa)	10 VMs (kPa)	F	P
F0	13	6.95 ± 2.01	6.87 ± 1.83	6.90 ± 1.88	6.95 ± 1.93	7.15 ± 1.89	0.043	0.996
F1	33	7.12 ± 1.72	7.24 ± 1.72	7.21 ± 1.74	7.10 ± 1.78	7.04 ± 1.70	0.075	0.99
F2	24	9.37 ± 3.87	9.18 ± 3.68	9.19 ± 3.81	9.18 ± 3.81	9.19 ± 3.53	0.012	1
F3	21	11.91 ± 3.88	11.78 ± 4.04	11.83 ± 4.07	11.94 ± 4.17	12.00 ± 4.02	0.01	1
F4	21	19.30 ± 7.63	19.40 ± 7.36	19.54 ± 7.43	19.73 ± 7.21	20.25 ± 7.22	0.054	0.995

VMs: Valid measurements.