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

Figure 1 Ultrasonic liver image with hepatic/renal ratio and hepatic echo-intensity attenuation rate. A: Ultrasonic liver image with hepatic/renal ratio. ROI-1 and ROI-2 stands for the echo gray histograms of the liver and kidney cortex ROIs; B: Ultrasonic liver image with hepatic echo-intensity attenuation rate. ROI-1 and ROI-2 stands for the near-field and far-field echo gray histograms of the liver. ROI: Region of interest.

Figure 2 Linear correlation analysis between ¹H-magnetic resonance spectroscopy liver fat content and ultrasound hepatic/renal ratio (A), and hepatic echo-intensity attenuation rate (B). The illustration shows that the ¹H-MRS liver fat content that was determined significantly correlated with (A) the ultrasound hepatic/renal ratio (r = 0.952, P = 0.000) and (B) the hepatic echo-intensity attenuation rate (r = 0.850, P = 0.000). MRS: Magnetic resonance spectroscopy.