Application of residual liver volume ratio measured with CT for preoperative evaluation in pediatric hepatoblastoma / 中国医学影像技术

ABSTRACT

Objective: To assess the value of residual liver volume ratio measured with CT for preoperative evaluation in pediatric hepatoblastoma. Methods Totally 40 hepatoblastoma patients confirmed by pathology with the average age of (1.8±0.8)years were enrolled. All patients underwent pre-operation enhanced CT scan. The total liver volume, the predicted resected liver volume were measured, and the standard liver volume, the residual liver volume were calculated, respectively. The residual liver volume ratio was calculated with the formula of residual liver volume ratio=residual liver volume/standard liver volume×100%. The volume of the actual resected liver was measured by water immersion method and then compared with the volume of the pre-resected liver measured with CT. ROC curve was used to evaluate the efficacy of residual liver volume ratio for prediction of moderate and severe liver dysfunction. Results: The predicted resected liver volume and actual resected liver volume was (393.62±216.54)cm3 and (388.38±207.56)cm3, respectively, with no significant difference (t=1.679, P=0.101). The residual liver volume was (234.55±70.42)cm3, and the residual liver volume ratio was (63.64±13.70)%. AUC of ROC curve for prediction of moderate and severe liver dysfunction was 0.837 (P=0.016), the critical value was 56.32%, and the sensitivity and the specificity was 86.7% and 70.0%, respectively. Conclusion: The preoperative calculation of residual liver volume ratio with CT in children with hepatoblastoma is a great value in the selection of surgical option and evaluation of postoperative liver function.