title: Demonstration of collateral pathways after superior vena caval obstruction with the scintillation camera.
mesh_terms: D003097:Collateral Circulation; D006801:Humans; D008297:Male; D008875:Middle Aged; D010690:Phlebography; D011874:Radiometry; D013667:Technetium; D014652:Vascular Diseases / Q000175:diagnosis*; D014680:Veins; D014683:Vena Cava, Superior
chemical_list: D013667:Technetium