Table 1.

FDA-approved GBC agents and iodinated radiocontrast agentsa

AgentMolecular StructureChargeOsmolality (mOsm/L)Viscosity (mPa · S)Stability ConstantExcess Chelate (mg/ml)
GBC formulation
    gadodiamide (Omniscan)LinearNonionic9001.41014.912.00
    gadopentetate (Magnevist)LinearIonic19602.91018.10.40
    gadoversetamide (OptiMARK)LinearNonionic11102.01015.028.40
    gadobenate (MultiHance)LinearIonic19705.31018.40.10
    gadoteridol (Prohance)CyclicNonionic6301.31017.10.23
Iodinated contrast
    diatrizoateMonomerIonic19806.0N/AN/A
    iopamidal, iohexolMonomerNonionic600 to 10005.0 to 10.0N/AN/A
    iodixanolDimerNonionic28011.0N/AN/A
    iosmenolDimerNonionic2807.0N/AN/A
  • a FDA, Food and Drug Administration; GBC, gadolinium-based contrast.