Magnetic Resonance Technics for the Assessment of Liver Function Before and After TIPS

Portal hypertension is the end-stage fatal complications of liver cirrhosis. Decompensated cirrhosis patients can pass through transjugular intrahepatic portosystemic shunt to effectively prevent bleeding and refractory ascites. However, the occurrence of hepatic encephalopathy and liver function failure, infection, bleeding again are main lethality postoperative complications after TIPS. The accurate TIPS shunt is necessary to reduce the incidence of complications and improve the patients' survival rate and survival quality. Hepatic venous pressure gradient (HVPG) is standard to evaluate TIPS preoperative and postoperative hemodynamic change and is also the most important the predictors of decompensation and varicose vein bleeding of liver cirrhosis. Whether there is a kind of noninvasive monitoring method can guide TIPS accurate shunt and evaluate the prognosis of patients. Magnetic resonance imaging (MRI) has a high soft tissue resolution, time and spatial resolution, abdominal MRI can noninvasively, dynamically detect the liver, spleen, portal system functions, the changes of portal system hemodynamics, blood supply of liver tissue, perfusion and liver cell function, etc. In order to analyze the liver function and survival of liver cirrhosis patients after transjugular intrahepatic portosystemic shunt, advanced magnetic resonance techniques are used before and after transjugular intrahepatic portosystemic shunt. We will combine a variety of advanced magnetic resonance imaging technology, long-term and dynamic monitor TIPS preoperative and postoperative liver function, blood flow, perfusion, the change of tissue elasticity, and analysis the incidence of hepatic encephalopathy, hemorrhage, hepatic failure and survival rate with MRI changes. Finally, we will develop new prediction index, guide TIPS precision shunts, evaluate a variety of the value of imaging technology in the application of patients with TIPS to find the most sensitive technology, and discover th