title: [Radiopacity of double-J ureteral catheters. Computed tomography quantification and clinical implications].
abstract: OBJECTIVE
  To determine whether knowledge about the degree of radiopacity of the double-J ureteral catheters utilized in Spanish hospitals suffices for correct radiologic control and subsequent follow-up.
  
  
  METHODS
  The CT attenuation index was utilized to determine the degree of radiopacity of 23 double-J ureteral stents, comprised of different biomaterials and from different manufacturers, that are used in Spanish hospitals.
  
  
  RESULTS
  The values ranged from 1,000-3,070 Hounsfield units.
  
  
  CONCLUSIONS
  All the catheters analyzed were sufficiently radiopaque to permit good radiologic control during insertion and subsequent follow-up. The radiopacity of the stent depends on the metal salt employed during the manufacturing process and not on the biomaterial.
authors.affiliation: Servicio de Urología, Hospital Universitario del Aire, Madrid.
authors.forename: J
authors.initials: J
authors.lastname: Vallejo Herrador
authors.forename: A
authors.initials: A
authors.lastname: Cuevas Ibáñez
authors.forename: J
authors.initials: J
authors.lastname: Burgos Revilla
authors.forename: J C
authors.initials: JC
authors.lastname: Sáez Garrido
authors.forename: M
authors.initials: M
authors.lastname: Téllez Martínez-Fornés
authors.forename: F
authors.initials: F
authors.lastname: Martín-Laborda y Bergasa
mesh_terms: D008422:Materials Testing; D014057:Tomography, X-Ray Computed; D014546:Urinary Catheterization / Q000295:instrumentation*