ABSTRACT
Objective To explore the diagnostic value of the dual-energy technique with dual-source in the evaluation of therapeutic effect of interventional therapy for hepatocarcinoma.Methods 8 rabbits with tumor growing well were treated with intervention operation,paralleled with double energy CT scan and focal area image,CT and color order change were measured by dual energy liver OVERLAY workstation.Meanwhile,The necrosis and survival of tumor were evaluated by dual energy CT after hepatocarcinoma intervention therapy.Results Taking pathologic diagnosis as gold standard,compared with imaging and pathological results in the order of black,red,orange and red,accuracies were 87.2％,72.3％,71.5％ and 83.6％ respectively.Sensitivities were 95.1％,37.4％,54.7％ and 63.8％ respectively.Specificities were 85.4％,86.3％,81.5％ and 85.8％ respectively.Positive predictives value were 61.4％,54.2％,62.4％ and 55.6％ respectively.Negative predictive values were 96.3％,76.2％,79.7％ and 91.3 ％ respectively.According to the Spearman relevance analysis,there was strong positive correlation between survival of tumor cells and image color scale (r =12.35,P ＜ 0.05).Conclusion The necrosis and survival of tumor cells in rabbit VX2 liver tumor model can be preliminarily reflected by dual source CT dual energy enhancement scanning.The results provide good reference to the application of dual-source and dual-energy in clinical diagnosis and treatment.