UrographyUrologic DiseasesUreteral CalculiUreteral DiseasesIodopyracetTomography, X-Ray ComputedHematuriaUreterUrinary TractHydronephrosisUrinary CalculiColonography, Computed TomographicDiatrizoate MeglumineUreteral ObstructionCystoscopyKidney CalicesUrolithiasisFlank PainColicTomographyIodamideRadiography, AbdominalUltrasonographyContrast MediaDiatrizoateUrinary Bladder DiseasesIohexolUreteral NeoplasmsKidney PelvisTomography, OpticalVesico-Ureteral RefluxUrologic NeoplasmsDilatation, PathologicUrologic Surgical ProceduresUrinary Tract InfectionsSensitivity and SpecificityKidney DiseasesTomography, Emission-ComputedImaging, Three-Dimensional