Computed tomography perfusion in differentiating portal hypertension: A correlation study with hepatic venous pressure gradient

Figure 1 Baseline of computed tomography maps and time density curves before and after transjugular intrahepatic portosystemic shunt. A: Baseline of computed tomography (CT) map with regions of interests for input arterial abdominal artery and portal vein before transjugular intrahepatic portosystemic shunt (TIPS); B: Time-density curve of CT perfusion before TIPS, and axis X is time axis with unit of second, while axis Y is density axis with unit of Hounsfield; C: Region of interest in liver parenchyma for perfusion parameters after TIPS; D: Time-density curve of CT perfusion after TIPS, and axis X is time axis with unit of second, while axis Y is density axis with unit of Hounsfield.