Noninvasive Prediction of Portal Hypertension in Cirrhosis Using Sound Touch Viscoelastography

The objective of this observational study is to investigate and validate the utility of the Sound Touch Viscoelastography(STVi) technique in patients with liver cirrhosis for noninvasive prediction of Portal hypertension (PH). The primary research questions it seeks to address are as follows: * What is the correlation between the liver STVi index and Portal Venous Pressure Gradient (HVPG)? * Is STVi an available tool to non-invasively predict PH in patients with liver cirrhosis? And the effectiveness and practicality of STVi will be validated. * To establish a predictive model for Clinically Significant Portal Hypertension (CSPH) utilizing liver STVi index as the primary indicator. The HVPG is considered as the gold standard in this study and STVi was employed to quantify the STVi index of the liver in patients with liver cirrhosis. Researchers will compare the two patients groups, HVPG≥10 mmHg and HVPG\<10 mmHg, to see the usage of STVi in the noninvasive prediction of PH.