Contrast-enhanced voiding urosonography (ceVUS) has been recognized as a child-friendly examination with high diagnostic accuracy for vesicoureteric reflux detection. A single bolus and the infusion techniques of ceVUS are described. Insufficient bladder contrast opacification during the filling phase and premature destruction of SonoVue microbubbles might occur. Data regarding SonoVue's features, doses, bladder contrast opacification, US bladder parameters, urine catheter, antibiotic prophylaxis, and childrens behaviors were collected to discover the possible causes of the contrast vanishing observed during bladder filling in 10% of examinations and in the later phase of ceVUS in 5% of examinations. An updated ceVUS examination protocol is suggested.
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