Figure 4.

Receiver-operating characteristic curve for the percentage of functional liver volume irradiated with ≥ 20 Gy (_FLV_20Gy). The optimal cutoff value for _FLV_20Gy was 20% for predicting radiation-induced liver disease or a deterioration in the Child-Pugh score of ≥ 1 point. At this cutoff value, sensitivity and specificity were 0.867 and 0.857, respectively. The area under the receiver-operating characteristic curve was 0.923 (P < 0.001). Journal of Gastroenterology and Hepatology Research gave assurance that the copyright for this figure is retained by the authors.