title: Estimation of portal-systemic shunting by rectal infusion of radiotracer.
mesh_terms: D000285:Administration, Rectal; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000000981:diagnostic imaging*; D008107:Liver Diseases / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011167:Portacaval Shunt, Surgical; D011169:Portal Vein / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging*
chemical_list: D013670:Sodium Pertechnetate Tc 99m