title: Editorial comment.
authors.forename: Hessel
authors.initials: H
authors.lastname: Wijkstra
authors.forename: Jean J M C H
authors.initials: JJ
authors.lastname: de la Rosette
mesh_terms: D000818:Animals; D003287:Contrast Media / Q000008:administration & dosage*; D007668:Kidney / Q000098:blood supply* / Q000000981:diagnostic imaging*; D051381:Rats; D012079:Renal Circulation / Q000187:drug effects*; D014463:Ultrasonography / Q000379:methods; D014662:Vasoconstrictor Agents / Q000494:pharmacology*; D014665:Vasodilator Agents / Q000494:pharmacology*
chemical_list: D003287:Contrast Media; D014662:Vasoconstrictor Agents; D014665:Vasodilator Agents