25 cases of normal person and 53 patients of biliary system disease were examined with hepato-biliary imaging using

99m

Tc-EHIDA from March 1983 to March 1984. The results showed that the EHIDA can be used as a hepatobiliary imaging agent in several biliary system diseases if the serum bilirubin is less than 7-10 mg/dl. The diagnostic coincident rate is about 95%. When the bilirubin is greater than 10mg/dl

however it fail to give satisfactory imaging.