Viscosity defines the thickness or concentration of the contrast agent. The viscosity of a contrast agent can affect the injection rate.When you heat them up they would flow better, so yes heat would help with injecting the contrast, but viscosity isn't a rate of temperature.
the state of being thick, sticky, and semifluid in consistency, due to internal friction.
synonyms:thickness,gooeyness,viscidity;More
a quantity expressing the magnitude of internal friction, as measured by the force per unit area resisting a flow in which parallel layers unit distance apart have unit speed relative to one another.
The amount of friction generated by the molecules. The definition of viscosity isthe state of being thick, sticky, and semifluid in consistency, due to internal friction