Technetium-99m superior vena cavography.
D000368:Aged; D003097:Collateral Circulation; D006801:Humans; D008722:Methods; D008875:Middle Aged; D013667:Technetium; D014652:Vascular Diseases / Q000175:diagnosis*; D014683:Vena Cava, Superior
D013667:Technetium