title: Urographic contrast agents.
mesh_terms: D003287:Contrast Media / Q000652:urine*; D003973:Diatrizoate / Q000652:urine; D007456:Iodine Isotopes; D012964:Sodium / Q000652:urine; D013997:Time Factors; D014567:Urography
chemical_list: D003287:Contrast Media; D007456:Iodine Isotopes; D003973:Diatrizoate; D012964:Sodium