The cholegraphic agent iodoxamate (Endomirabil) was examined in respect of its contrasting performance and it side effects in the application form of a short infusion in 141 patients. Besides the global contrasting frequency of the biliary system we determined the connection between contrasting rate and the time post infusion. Results were compared with data from literature and with those obtained in an own study on the cholegraphic agent iotroxic acid (Biliscopin). If applied via short-term infusion, iodoxamate (Endomirabil) shows advantages over conventional manual injections techniques. Contrasting potency and side effects of iodoxamic acid and iotroxic acid are of the same order of magnitude for both products.