crown-section of tunnel
sudden change of tunnel section
a strategy of portal selection
angiography of portal vein
beam-column joint of portal frame
Bypass of portal vein and inferior vena cava
cavernous transformation of portal vein
connection of portal frame
diameter of portal vein
Disconnection of portal-systemic venous shunt
environment luminance at tunnel portal
High pressure of portal vein
Hypertension of portal vein
Injury of portal or splenic vein
left trunk of portal vein
ligation of branches of portal vein