Contrast-enhanced gray-scale and color doppler voiding urosonography versus voiding cystourethrography in the diagnosis and grading of vesicoureteral reflux

Author(s):  
Anna Lia Valentini ◽  
Elio Salvaggio ◽  
Carlo Manzoni ◽  
Claudia Rendeli ◽  
Carmelo Destito ◽  
...  
2003 ◽  
Vol 44 (3) ◽  
pp. 265-268
Author(s):  
M. Uhl ◽  
J. Kromeier ◽  
L.-B. Zimmerhackl ◽  
K. Darge

Purpose: To compare the diagnostic accuracy of contrast-enhanced voiding urosonography (VUS) and voiding cystourethrography (VCUG) during simultaneous performance of both examinations. Material and Methods: A total of 24 children, 16 girls and 8 boys, with a mean age of 3.5 years referred for reflux examination were recruited for the study. After transurethral bladder catheterization, radiographic contrast medium, followed directly by the US contrast medium, were administered. Fluoroscopic VCUG and VUS were carried out concurrently in the same patient. When 1 kidney was scanned by ultrasound, fluoroscopy was performed on the contralateral side. Results: In 19 of the 47 kidney-ureter-units (KUU) vesicoureteral reflux (VUR) was detected. In 16 units the reflux was detected by both VCUG and VUS. In 3 KUUs the reflux was detected only at VCUG. All 3 cases were grade 1. Taking the VCUG as the reference standard, VUS had 84% sensitivity, 100% specificity, 100% and 90% positive and negative predictive values, respectively. Conclusion: A dependable comparison could be achieved by performing VCUG and VUS at the same time and under the same conditions. It reconfirmed that VUS is reliable in the exclusion or verification of reflux.


Author(s):  
R. A. Kadyrleev ◽  
S. S. Bagnenkо ◽  
E. A. Busko ◽  
E. V. Kostromina ◽  
L. N. Shevkunov ◽  
...  

Purpose: To compare the capabilities and evaluate the effectiveness of gray-scale B-mode, Doppler mapping and contrast enhanced in the assessment of cystic renal lesions.Material and methods: Ultrasound examination (US) was performed in 61 patients with cystic kidney formations (category Bosniak ≥ II). Cysts of categories Bosniak ≥ III were histologically verified, rest (categories II–IIF) were under follow up. All patients underwent gray-scale ultrasound, color Doppler imaging and contrast enhanced (CEUS).Results: The efficiency of the B mode was: sensitivity 55.6 %; specificity 72.1 %; accuracy 62.3 %, in the CDI mode these indicators were 52.8; 80.1; 63.9 %, respectively. Contrast ultrasound significantly increased the capabilities of the method, and also made it possible to evaluate cystic formations according to the Bosniak criteria with indicators of the effectiveness of the method up to 100.0; 92.0; 96.7 %, respectively.Conclusions: CEUS demonstrated high informative value in the assessment of renal cystic formations in comparison with native ultrasound and Doppler modes, and therefore the technique should be considered as promising for inclusion in the algorithm of examination of complex renal cysts. 


2018 ◽  
Vol 34 (4) ◽  
pp. 250-267 ◽  
Author(s):  
Emilio Quaia ◽  
Jean Michel Correas ◽  
Maithili Mehta ◽  
John T. Murchison ◽  
Antonio Giulio Gennari ◽  
...  

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