title: Enhanced visualization of the portal system using phentolamine and isoproterenol in combination.
mesh_terms: D000328:Adult; D001794:Blood Pressure; D005069:Evaluation Studies as Topic; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007545:Isoproterenol / Q000009:adverse effects; D008638:Mesenteric Arteries / Q000000981:diagnostic imaging / Q000502:physiology; D008875:Middle Aged; D010646:Phentolamine / Q000009:adverse effects; D011169:Portal Vein / Q000000981:diagnostic imaging*; D011859:Radiography
chemical_list: D007545:Isoproterenol; D010646:Phentolamine