Oral cholecystographic contrast media--a comparative study.

Three oral cholecystographic contrast media have been compared, mainly with regard to their ability to outline the gall bladder and also the frequency of undesirable side-effects that they produce. No significant differences were found between the media, and the final choice of a suitable medium for use in X-ray departments may depend on their relative cost. In times of financial restraint, such a decision might increasingly involve hospital pharmacists.