XLIV Bronchography with Dionosil

Three years go, in a paper before this Association,' the authors described their experiences with two relatively new aqueous contrast media. These preparations, Umbradil Viscous Band Ioduron B, had been introduced chiefly with the intent of avoiding the prolonged alveolar retention usually seen after instillation of iodized oil. In their essential constituents, the two products are identical, consisting of a 50 per cent solution of iodopyracet to which is added sodium carboxymethylcellulose sufficient to provide the desired viscosity. Among the advantages offered by these preparations, in comparison with the iodized oils, were listed their rapid elimination (usually in less than four hours) , their stability, a viscosity which may be altered, and freedom from systemic toxic effect.