Ultra low-dose VCUG in XXXX using a modern flat detectorunit.

@entity1 @entity24882 @entity3025
OBJECTIVES: To assess dose area products (DAP) and @entity24882 ( @entity24882 ) of voiding cystourethrography (VCUG) in @entity1 using optimized protocols on a modern flat detector unit. METHODS: DAP and @entity24882 were evaluated in 651 VCUG (316 @entity1 , median age: 2.25  years) between 2009 and 2012. DAP was analyzed in relation to @entity1 characteristics (gender, age, presence of pathological findings) and experience of performing physician using analysis of variance. @entity24882 values were estimated using adapted conversion factors from the literature. Diagnostic image quality was validated by two experienced physicians using a 3-point scale. RESULTS: Median DAP/ @entity24882 was 0.5  cGycm(2)/4.56   Sv ( @entity1 : 0.6  cGycm(2)/6.16   Sv; @entity1 : 0.4  cGycm(2)/3.54   Sv). In 300 studies without pathologic findings DAP was 0.35  cGycm(2), whereas 351 studies with pathologic findings had a median DAP of 0.7  cGycm(2). No significant relationship between DAP and experience of radiologist was observed. Image validation resulted in an overall good to excellent rating. CONCLUSIONS: DAP and @entity24882 can be markedly reduced in paediatric VCUG performed with optimized protocols on modern equipment without a noticeable decrease in diagnostic image quality. KEY POINTS:     Voiding cystourethrography is a comprehensive examination in diagnosing @entity3025 ( @entity3025 ).     Radiation reduction is achieved in VCUG through modern equipment and optimized protocols.     Low-dose VCUG is possible without noticeable decrease in diagnostic image quality.
