Abstract
Radionuclide uroflowmetry (UFM) belongs to the spectrum of radionuclide investigative methods used in pediatric nephro-urological practice. We present results of the functional parameters by the evaluation of indirect radionuclide UFM in our group of patients with different nephro-urological diagnoses. 310 examinations were performed in 266 patients (67 boys and 199 girls aged 1.7 to 21 years, average age 10.6 years), 28 of them were examined repeatedly.
Evaluation of the indirect radionuclide UFM was done using Ostnucline software which was focused mainly on determining the values of the functional parameters: a full bladder volume, a voided volume, a residual urinary bladder volume, a maximum flow rate, an average flow rate, a duration of the voiding, a maximum UFM index, an average UFM index. In the group with suspected VUR, 8/17 children were detected with active VUR.
In the group of children following VUR surgery, small bladder filling was the most frequent finding. Similarly, low volume of the bladder was detected in half of children with enuresis.
Slow flow rate of micturition was recorded in all groups, most often in patients with dysfunctional voiding. Increased urinary residue after micturition was found in patients with recurrent UTI.
The advantages and limits of this method are discussed in this study. Based on our experience, despite the pitfalls of the method, indirect radionuclide UFM can provide valuable information indicative of pathological micturition or urinary tract pathology.
The examination is simple, without any other radiopharmaceutical application, using the physiological conditions of filling and spontaneous emptying of the urinary bladder.