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Voiding Urosonography with Second-Generation Ultrasound Contrast Agent for Diagnosis of Vesicoureteric Reflux: First
Dafina Kuzmanovska1, Aleksandar Risteski2, Margarita Kambovska2
1University Children's Hospital, Medical Faculty, Ss Cyril and Methodius University of Skopje, Vodnjanska 17, Skopje, Republic of Macedonia.
Insights
Contrast-enhanced voiding ultrasonography (ceVUS) effectively detects vesicoureteric reflux (VUR) in children. This radiation-free method is safe and reliable for diagnosing VUR and evaluating the urinary tract.
Area of Science:
- Pediatric Urology
- Diagnostic Imaging
Background:
- Vesicoureteric reflux (VUR) is a common complication of pediatric urinary tract infections (UTIs), affecting 30-50% of children.
- Contrast-enhanced voiding ultrasonography (ceVUS) is a radiation-free imaging technique for VUR detection.
Purpose of the Study:
- To review the literature and present findings from a pilot study on ceVUS for VUR detection in children.
- To evaluate the efficacy of second-generation ultrasound contrast agents in ceVUS.
Main Methods:
- Retrospective review of 31 ceVUS examinations in children aged 2 months to 18 years.
- Utilized second-generation ultrasound contrast agent (SonoVue).
Main Results:
- ceVUS detected VUR in 64.5% of children (20/31), involving 51.6% of nephroureteral units.
- VUR grades ranged from II to IV.
- Identified "spinning top urethra" in two girls, indicating functional bladder issues.
Conclusions:
- ceVUS with second-generation contrast agents is a safe, effective, and reliable alternative for diagnosing VUR in children.
- The method is suitable for evaluating the pediatric distal urinary tract without radiation exposure.
Background:
Vesicoureteric reflux (VUR) is an important association of paediatric urinary tract infection (UTI) found in 30-50% of all children presenting with first UTI. Contrast-enhanced voiding ultrasonography (ceVUS) has become an important radiation-free method for VUR detection in children. Its sensitivity in detecting VUR has greatly improved due to the development of the contrast-specific ultrasound techniques and the introduction of the second-generation ultrasound contrast agent, superseding the diagnostic accuracy of standard radiological procedures.
Aim:
This article aimed to summarise the current literature and discuss the first local pilot study performed in our institution on detection of vesicoureteric reflux by contrast-enhanced voiding ultrasonography with second- generation agent (SonoVue, Bracco, Italy).
Material And Methods:
Retrospective review of the first 31 ceVUS (24 girls, 7 boys) was presented. Age range was 2 months to 18 years (mean = 6.4 ± 4.9).
Results:
All examinations were well tolerated without any adverse incident. VUR was shown in 20 (64.5%) children in 32/62 (51.6) nephroureteral units (NUUs). In 18 NUUs, VUR was grade II/V, in 11 Grade III/V and in 3 grade IV/V, respectively. Urethra was shown in 19/31 children and in all boys, without pathological finding. In two girls spinning top urethra has been detected. Subsequent urodynamic studies revealed functional bladder problem in both.
Conclusions:
Contrast-enhanced voiding urosonography using intravesical second generation ultrasound contrast agent could be recommend as a valid alternative diagnostic modality for detecting vesicoureteral reflux and evaluation of the distal urinary tract in children, based on its radiation-free, highly efficacious, reliable, and safe characteristics.
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Imaging Studies VII: Vascular Imaging

