[Comparison of the side effects of urographic contrast media (iothalamate, diatrizoate, iodamide, iopamidol) within the scope of a CT study].

In 1465 patients the side effects of urographic contrast media for enhancement in CT were compared. The results show that the reaction frequency with iotalamate is 5.1%, with diatrizoate 7.0% and with iodamide 8.9%, but only 0.5% with iopamidol. The number of incidents to be expected with iopamidol is one decimal place lower. Obviously this has to do with its low osmolality. On the other hand we interpret the comparatively slightly higher incidence rate when using iodamide as a result of its higher lipophilic nature.