title: High- and low-osmolar contrast agents in urography: a comparison of the appearances with respect to pyelotubular opacification and renal length.
abstract: The incidence of pyelotubular opacification and the change in renal length during intravenous urography with iohexol (Omnipaque) was compared with sodium/meglumine diatrizoate (Urografin). Pyelotubular opacification was seen in 14 out of 29 urograms performed with iohexol compared with one out of 28 urograms performed with sodium/meglumine diatrizoate. This increased incidence is statistically significant and has not been previously documented. The increase in renal length following intravenous contrast medium was similar for both iohexol and sodium/meglumine diatrizoate. The significance of these findings with respect to the interpretation of urograms performed with iohexol is discussed.
mesh_terms: D000328:Adult; D003287:Contrast Media; D003973:Diatrizoate / Q000031:analogs & derivatives*; D003974:Diatrizoate Meglumine; D005260:Female; D006801:Humans; D007463:Iodobenzoates; D007472:Iohexol; D007668:Kidney / Q000000981:diagnostic imaging* / Q000473:pathology; D007679:Kidney Medulla / Q000000981:diagnostic imaging; D007684:Kidney Tubules / Q000000981:diagnostic imaging; D008297:Male; D009994:Osmolar Concentration; D011859:Radiography; D014283:Triiodobenzoic Acids
chemical_list: D003287:Contrast Media; D007463:Iodobenzoates; D014283:Triiodobenzoic Acids; D003973:Diatrizoate; D003974:Diatrizoate Meglumine; D007472:Iohexol