Objective To explore feasibility of using MSCT-assisted abdominal neuroblastoma resection and their assessment standard,as well as potential clinical values.Methods 43 patients associated with neuroblastoma or ganglio-neumblastoma in abdomen underwent preoperative MSCT.Based on imaging,they were classified into 5 types according to the relationship between the tumors and the important vessels.Then all patients underwent resection.Helical CT results were compared with intraoperative observation so as to find out the better cutoff point of respectability.Results 473 vessels were analyzed in this study.All the vessels were divided into 5 types,involving 283 vessels in grade A,65 vessels in grade B,32 vessels in grade C,76 vessels in grade D and 17 vessels in grade E.The receiver operating characteristic (ROC) curve was drawn according to the images and the operations.When grade B was reagarded as the criteria for resectability of neuroblastoma in abdomen,sensitivity was 84.47％,specificity was 89.73％,a positive predictive value was 69.60％,a negative predictive value was 95.40％ and accuracy was 88.58％ for unrepeatability of tumors.Conclusions Once exceling more than half of vessel circumference in tumor,the tumor is not suggested to be resected completely.