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

Figure 2 A 37-year-old patient with 2 times gastroesophageal bleeding for more than 10-year history of hepatitis B. A-D: Colored map of computed tomography (CT) perfusion parameters were shown as liver blood volume (LBV), hepatic arterial fraction (HAF), spleen blood flow (SBF), and spleen blood volume (SBV) before transjugular intrahepatic portosystemic shunt (TIPS); E-H: Colored map of CT perfusion parameters were shown as LBV, HAF, SBF, and SBV after TIPS. All CT perfusion parameters were calculated with average of multiple irregular regions of interest in the color maps, which showed decreased LBV and increased HAF, SBF and SBV.