The most common MR urographic techniques used to display the urinary tract can be divided into two categories: (a) static-fluid MR urography (b) excretory MR urography. The combined static- excretory MR urography enables an all in one evaluation of the entire upper urinary tract. It provides detailed information regarding anatomy, as well as renal function and drainage in a single study without the use of ionizing radiation. In this study MR urography has been successfully used for the evaluation of pediatric urinary tract disease. Based on our findings, one can suggest that once ultrasound study is not conclusive, MRU is the imaging modality of choice.Particularly in patients with severe and/or complex pathology, ectopic ueretral insertion and duplex systems with poor function. MRU has to be indicated, as it is not only diagnostically better, but may replace some conventional imaging and thus may help to save costs by replacing inferior, non-diagnostic methods in the individual query. This study confirmed that the MR sequences chosen should be guided by the clinical information available before MRI: Static T2-weighted MRU should be used in dilated collecting systems with little or no function. While excretory MRU is used when there is no suspicion of renal dysfunction.However despite the many advantages of MRU, there were limitations. The major obstacles were the cost and the need for sedation.