Viscosity of radiographic contrast media

The data on the viscosities of radiographic contrast media (RCM) in the literature diverge, sometimes considerably. A direct comparative study of RCM appears reasonable and necessary, since different studies have been based on the assumption of the correctness of historical data from the literature. RCM viscosities in the literature differ for one and the same contrast medium by up to 19.1%. Therefore, the measurement of these substances was carried out in terms of their viscosity with the same device under identical experimental conditions at virtually the same time. Of the 15 investigated RCMs, the viscosities were in 9 cases higher than the highest specification in the literature, the values were in the range of literature in three substances, and in three cases the values were a little below the lowest values in literature.