Table 1.

Our pediatric MRU protocol

Patient arrives 60–90 prior to exam time	NPO 4 h if non-sedate (otherwise set by anesthesia)
Place bladder catheter and clamp
Place IV catheter (two IV catheters if sedation is needed)
IV hydration	10 mL/kg IV saline over 15 min for sedated patients or 30 min for non-sedated
T2-weighted single-shot fast spin-echo without/with fat suppression	Sagittal, coronal
Unclamp bladder catheter
IV diuretic	0.5 to 1 mg/kg (max dose = 40 mg)
T2-weighted fast spin-echo with fat suppression	Axial
High spatial resolution 3D T2-weighted fast spin-echo without and with fat suppression	Coronal
3D T1-weighted gradient recalled echo with fat suppression	Coronal
IV Dotarem	0.2 mL/kg at 0.2 mL/s
3D T1-weighted gradient recalled echo with fat suppression	Coronal, 15 min dynamic post-contrast
3D T1-weighted gradient recalled echo with fat suppression	Sagittal, coronal, axial
Remove IV and bladder catheter