title: Visual swoosh test.
authors: William
authors: W
authors: Russell
mesh_terms: D000763:Anesthesia, Caudal / Q000379:methods*; D002648:Child; D004388:Dura Mater / Q000000981:diagnostic imaging*; D006801:Humans; D013116:Spinal Cord / Q000000981:diagnostic imaging*; D014463:Ultrasonography