Off-label-use of sulfur-hexafluoride in voiding urosonography for diagnosis of vesicoureteral reflux in children: A survey on adverse events

Figure 1 Voiding cystourethrography (A) vs voiding urosonography (B) of a two-year-old male patient with proven vesicoureteral reflux left at the left kidney (grade II). The voiding urosonography scan shows the urosonography contrast agent microbubbles in the left renal pelvis (agent detection mode).

Figure 2 Voiding urosonography of a 6-year-old girl with proven, bilateral vesicoureteral reflux (grade I left and grade III right). The voiding urosonography scan shows the urosonography contrast agent microbubbles in both ureters and in the left renal pelvis (A: Bladder and distal ureters; B: Right kidney and proximal ureter; C: Left kidney).