The use of alpha blocking and beta stimulating drugs in combination to improve opacification of the portal venous system.
D000792:Angiography; D000818:Animals; D001783:Blood Flow Velocity; D001794:Blood Pressure / Q000187:drug effects; D002404:Catheterization; D004285:Dogs; D004562:Electrocardiography; D006339:Heart Rate / Q000187:drug effects; D007269:Injections, Intra-Arterial; D007545:Isoproterenol / Q000008:administration & dosage*; D008638:Mesenteric Arteries / Q000000981:diagnostic imaging / Q000187:drug effects; D008642:Mesenteric Veins / Q000000981:diagnostic imaging; D010646:Phentolamine / Q000008:administration & dosage*; D011168:Portal System / Q000000981:diagnostic imaging*; D011169:Portal Vein / Q000000981:diagnostic imaging / Q000187:drug effects; D012119:Respiration / Q000187:drug effects; D014655:Vascular Resistance / Q000187:drug effects; D014666:Vasomotor System / Q000187:drug effects; D014690:Venous Pressure / Q000187:drug effects
D007545:Isoproterenol; D010646:Phentolamine