[Radiopacity of double-J ureteral catheters. Computed tomography quantification and clinical implications].
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.
Vallejo Herrador
J
J
Servicio de Urología, Hospital Universitario del Aire, Madrid.
Cuevas Ibáñez
A
A
Burgos Revilla
J
J
Sáez Garrido
J C
JC
Téllez Martínez-Fornés
M
M
Martín-Laborda y Bergasa
F
F
D008422:Materials Testing; D014057:Tomography, X-Ray Computed; D014546:Urinary Catheterization / Q000295:instrumentation*