Ultrasound hepatic/renal ratio and hepatic attenuation rate for quantifying liver fat content

Table 2 Quantitative ultrasound index estimation model for liver fat content

	Model	Regression coefficients ± SD				P value	Corrective R2	RMSE
		Ultrasound hepatic/renal ratio	Hepatic echo-intensity attenuation rate	Constant
Liver fat content	1	72.012 ± 3.445	-	-34.704 ± 2.302	-34.704 ± 2.302	0.000	79.0%	6.12
	2	61.519 ± 4.311	167.701 ± 42.115	-26.736 ± 3.012	-26.736 ± 3.012	0.000	80.1%	5.33

Model 1: Ultrasound hepatic/renal ratio model to estimate ¹H-MRS liver fat content. Model 2: Hepatic echo-intensity attenuation rate model to estimate ¹H-MRS liver fat content. RMSE: Root mean square error; ¹H-MRS: ¹H-magnetic resonance spectroscopy.