[Status of computerized tomography for the diagnosis of diseases of the gallbladder and bile ducts].

After a short introduction to the computed tomographic examination technique and the demonstrability of the anatomic structures in the section picture the findings in cholelithiasis, cholecystitis and cholangitis, in the malignoma of the biliary system as well as of the traumatic lesion of the bile ducts are described. In the diseases mentioned the reliability of the computed tomography is high and it does not fall behind the sonography. Nevertheless, the sonography is primarily to be used on account of missing radiation exposure, smaller costs and broader spread of appliances. Then the computed tomography is performed in selected cases which remain unclear such as in complicated lithiases and in the suspicion of malignoma.