Table 1.

Commonly used iodinated contrast media

Name	Type	Iodine content	Osmolality
Nonionic
iohexol (Omnipaque 350)	Monomer	350 mgI/ml	884	Low
iopamidol (Isovue 370)	Monomer	370 mgI/ml	796	Low
iopromide (Ultravist 370)	Monomer	370 mgI/ml	774	Low
ioxilan (Oxilan 350)	Monomer	350 mgI/ml	695	Low
iodixanol (Visipaque 320)	Dimer	320 mgI/ml	290	Low
Ionic
metrizoate (Isopaque 370)	Monomer	370 mgI/ml	2100	High
diatrizoate (Hypaque 50)	Monomer	300 mgI/ml	1550	High
ioxaglate (Hexabrix)	Dimer	320 mgI/ml	580	Low