a randomized , double-blind , parallel-group clinical study was conducted to compare the efficacy , tolerability , and safety of ioversol 320 mg i/ml ( optiray , 320 mallinckrodt medical , inc. , st. louis , mo ) and iohexol 300 mg i/ml ( omnipaque 300 , winthrop pharmaceuticals , new york , ny ) .
C0022005
iohexol
C0729203
omnipaque