Abstract: Objective: To assess the effect of computer-assisted 3-dimensional quantitative assessment and virtual surgical system for precise hepatectomy. Methods: The clinical data of 17 patients who had undergone precise hepatectomy at Tianjin First Center Hospital from June 2010 to June 2011 were retrospectively analyzed. EDDA’s IQQA?-Liver was used for constructed the 3-dimensional imaging of liver, and the anatomic relationship between hepatic vessel and tumor was analyzed. Total liver volume, predicted resection volume, the remnant liver volume and remnant-standard liver volume ratio (RSLVR) were calculated, and the operative program was planned according it. Results: Of the 17 patients, total liver volume was calculated as 1744.5±881.6ml, predicted resection volume as 919.2±884.4ml, the remnant liver volume as825.3±228.6ml, and RSLVR as 67.6%±22.3%. All patients received anatomical hepatectomy, and postoperative complications included bile leak in 1case, pleural effusion in 6 cases, moderate or massive ascites in 4 cases and pulmonary infection in l case. Conclusion: computer-assisted 3-dimensional quantitative assessment and virtual surgical system helped to determine the tumor localization and to plan optimal liver resection operations. It should be wide used for precise hepatectomy.

Key words: hepatectomy computer-aided designimaging, three-dimensionalliver neoplasms