Gadobutrol (INN) (Gd-DO3A-butrol) is a gadolinium-based MRI contrast agent (GBCA). It received marketing approval in Canada and in the United States. As of 2007, it was the only GBCA approved at 1.0 molar concentrations. Gadobutrol is marketed by Bayer Schering Pharma as Gadovist, and by Bayer HealthCare Pharmaceuticals as Gadavist. Category:Gadol...