[Radio-urodynamic study of the lower urinary tract]

Radio-urodynamic examination of the lower urinary tract is the best method to study the complex functional problems involving those structures. It will very often provide a correct diagnostic orientation in a single session. The main indications are (1) urinary incontinence when symptoms are unclear, or recurring after surgical correction, (2) neurogenic bladder dysfunction, (3) incipient obstructive uropathy and (4) when it is necessary to ascertain that micturition is normal. The necessary investment in personnel, time and material is considerable, and the indications are therefore to be limited to complex problems and to certain centers that have a special clinical and research interest in urodynamics. It is nevertheless highly justified by the improvement in therapeutic results engendered by a correct and precise diagnosis.