Objective This study is aimed to explore the walking of biliary system and the characteristics of anatomic variation, by reconstructing the three-dimensional model of biliary system in Chinese people. Methods According to the abdominal CT data of 100 patients who suffer from obstructive disease of biliary tract, three-dimensional models were reconstructed by using the Hisense computer-aided surgery (CAS) system，and were used to analyze the movement of intrahepatic biliary system. The biliary tract was classified according to Huang’s classification, that is the confluent mode of right posterior bile duct, right anterior bile duct and left hepatic duct, and the presence or absence of accessory hepatic duct. Results The three-dimensional models of bile ducts were successfully reconstructed in 100 Chinese patients. Seven types of biliary ducts can be observed. 54 cases (54%) had typical biliary tract anatomy (type I). 46 cases (46%) had anatomical variations, of which 10 cases (10%) were type II variants, 14 cases (14%) were type III variants, 10 cases (10%) were type IV variants, 2 cases (2%) were type V variants, and 2 cases (2%) were type VI variants. In addition, 8 cases (8%) had accessory hepatic ducts, of which 6 cases were accompanied by other variants. Conclusions The path and variation characteristics of biliary system can be identified clearly, by reconstructed Chinese biliary system in three dimensions. To discover news types of biliary tract variation can guide clinical diagnosis and treatment.
Key words
Three-dimensional reconstruction /
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Biliary tract system /
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Bile duct variation
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