Normal values of shear wave velocity in liver tissue of healthy children measured using the latest acoustic radiation force impulse technology

Table 4 Effect of body mass index on shear wave velocity measured in different hepatic lobes and at different depths

Liver lobe/depth	BMI group (kg/m2)				P value
	<15 (n = 23)	15-16 (n = 65)	16-17 (n = 54)	>17 (n = 60)
Left/1.5 cm					0.599
Mean ± SD	2.44 ± 0.38	2.59 ± 0.42	2.59 ± 0.50	2.58 ± 0.43
95%CI	2.27-2.62	2.48-2.70	2.44-2.75	2.40-2.77
Left/2.0 cm					0.235
Mean ± SD	1.94 ± 0.29	2.01 ± 0.40	1.99 ± 0.27	2.06 ± 0.50
95%CI	1.82-2.06	1.92-2.11	1.91-2.06	1.93-2.19
Left/2.5 cm					0.363
Mean ± SD	1.72 ± 0.25	1.77 ± 0.29	1.73 ± 0.26	1.81 ± 0.31
95%CI	162-1.82	1.70-1.84	1.66-1.80	1.73-1.90
Left/3.0 cm					0.427
Mean ± SD	1.58 ± 0.19	1.69 ± 0.22	1.67 ± 0.26	1.64 ± 0.22
95%CI	1.48-1.68	1.62-1.75	1.58-1.75	1.58-1.70
Right/1.5 cm					0.218
Mean ± SD	2.48 ± 0.36	2.60 ± 0.41	2.43 ± 0.40	2.57 ± 0.39
95%CI	2.29-2.26	2.48-2.72	2.30-2.56	2.42-2.71
Right/2.0 cm					0.312
Mean ± SD	2.04 ± 0.26	2.11 ± 0.39	2.03 ± 0.27	2.18 ± 0.39
95%CI	1.93-2.16	2.02-2.21	1.96-2.10	2.08-2.28
Right/2.5 cm					0.064
Mean ± SD	1.65 ± 0.22	1.79 ± 0.29	1.69± 0.21	1.79 ± 0.34
95%CI	1.56-1.75	1.71-1.86	1.63-1.75	1.70-1.87
Right/3.0 cm					0.347
Mean ± SD	1.55 ± 0.26	1.65 ± 0.27	1.60 ± 0.19	1.65 ± 0.24
95%CI	1.38-1.71	1.58-1.77	1.52-1.67	1.58-1.72

BMI: Body mass index.