[Diagnostic evaluation of reflux: significance of voiding cystourethrography]

Area of Science:

• Pediatric Urology
• Diagnostic Imaging
• Radiation Safety

Background:

• Radiological voiding cystourethrography (VCUG) is the established gold standard for diagnosing vesicoureteral reflux (VUR) in children.
• Contrast-based imaging techniques, including voiding urosonography (VUS) and radionuclide cystography (RCG), have emerged as alternatives.
• These methods are primarily indicated for reflux diagnosis following pyelonephritis in infants and young children.

Purpose of the Study:

• To review the indications and selection criteria for different radiological reflux testing methods in pediatric urology.
• To emphasize the importance of balancing diagnostic yield with minimizing radiation exposure.
• To highlight the shift towards risk-oriented, individualized patient management in reflux testing.

Main Methods:

• Review of established contrast-based radiological procedures for VUR diagnosis.
• Discussion of factors influencing method selection: clinical question, availability, cost, resources, and radiation dose.
• Analysis of modern strategies for VUR testing.

Main Results:

• VCUG remains the gold standard but alternative methods like VUS and RCG are available.
• Method selection depends on a multifactorial approach including clinical need and resource availability.
• The trend is towards personalized, risk-stratified indications for reflux testing, irrespective of the modality.

Conclusions:

• The choice of reflux testing method in pediatric urology requires careful consideration of multiple factors.
• Minimizing radiation exposure while maximizing diagnostic information is a key objective.
• Future strategies focus on individualized, risk-based approaches to VUR diagnosis.