voiding cystourethrogram
Fluoroscopic study examining bladder and urethral anatomy during bladder filling and voiding, essential for diagnosing vesicoureteral reflux.
Full Definition
A detailed fluoroscopic examination of the lower urinary tract performed by instilling contrast material into the bladder through a urinary catheter and imaging during both filling and voiding phases. This study is the gold standard for diagnosing and grading vesicoureteral reflux in children. The examination also evaluates bladder shape, capacity, and voiding dynamics, and can identify urethral abnormalities such as posterior urethral valves or strictures. In pediatric patients, the procedure requires careful attention to radiation dose optimization, patient comfort, and age-appropriate preparation. Sedation may be necessary for very young or anxious children.
Usage
Usage note: Spell out fully in formal reports; commonly abbreviated as VCUG in clinical notes.
In Context
- "The voiding cystourethrogram demonstrated bilateral grade III vesicoureteral reflux." — Pediatric urology report
- "Voiding cystourethrogram was performed to evaluate recurrent urinary tract infections." — Radiology requisition