Figure 2

Receiver operating characteristic (ROC) curve for D _0.5cc (dose to 0.5 ml of temporal lobe volume). The cutoff point for D_0.5cc (as the temporal lobe dose tolerance) was determined as 69 Gy for NPC patients treated with IMRT. At a D_0.5ccof 69 Gy, the sensitivity and specificity for the prediction of radiation-induced temporal lobe injuries (TLI) were 0.85 and 0.85, respectively.