[The micturition sonourogram: a new possibility for determining vesicorenal reflux in children].

Real time sonography enables sonographic imaging of vesicorenal reflux in childhood. Examination procedure is fundamentally like micturition cystourethrography and is called micturition sonourography (MSU). 117 children with radiologically diagnosed vesicorenal reflux were examined by this new method. The sonographically determined ascension of the bladder content into the renal pelvis is called "positive MSU". All vesicorenal refluxes of the third to fifth grade were also confirmed by sonography. Second-degree reflux can be confirmed in up to 95% of the cases if technique and experience are sufficiently advanced. The article discusses the technical procedure, diagnostic relevance and importance of the method.