A prospective study comparing ultrasound, nuclear scintigraphy and dynamic contrast enhanced magnetic resonance imaging in the evaluation of XXXX .

@entity1 @entity15740 @entity3041 @entity8767 @entity2885 @entity4145
PURPOSE: A combination of nuclear medicine, ultrasound and voiding cystourethrography is typically used to investigate @entity3041 in @entity1 . A major problem is the lack of an accepted gold standard to assess obstruction. In some cases the anatomy is unclear. By combining anatomical and functional information in one study, magnetic resonance imaging (MRI) has the potential of providing superior information regarding @entity3041 . We evaluate the role of dynamic enhanced MRI and compare it to other imaging modalities in the investigation of pediatric @entity3041 . MATERIALS AND METHODS: One hundred dynamic contrast enhanced MRIs were performed in 96 @entity1 (35 @entity1 and 61 @entity1 , mean age 4 years [range 1 month to 17 years]). The information from the various imaging modalities was compared. RESULTS: The MRI protocol was acceptable to all families and was performed without complications in all @entity1 . The morphological imaging with MRI was superior to conventional imaging in all cases. The split renal function as calculated by nuclear and MRI scans was compared in 71 cases, and the correlation coefficient was r2 = 0.93. The combination of ultrasound and a nuclear medicine study correlated with the final diagnosis of the MRI in 50 of 64 studies (78%). Of the 14 studies that differed 8 were obstructed on MRI but not on the nuclear studies, and 5 were not obstructed on MRI but were obstructed on the nuclear studies. One @entity1 believed to have @entity4145 on nuclear medicine scan had @entity4145 on MRI. The final diagnoses by MRI were @entity4145 in 26 @entity1 , primary @entity4145 in 14, dilated but not obstructed systems in 35, duplex systems in 13, @entity15740 in 5, unilateral small scarred kidney in 1, acute @entity2885 in 2, renal mass in 1, bilateral @entity8767 in 1 and normal study in 9. Sedation was administered safely without any complications. CONCLUSIONS: Dynamic contrast enhanced MRI provides equivalent information about renal function but superior information regarding morphology in a single study without ionizing radiation. MRI has the potential to replace the currently used combination of other imaging modalities in the investigation of @entity3041 in @entity1 .
