Fig. 3From: Comparison of hypofractionation and standard fractionation for post-prostatectomy salvage radiotherapy in patients with persistent PSA: single institution experienceReceiver operating characteristic (ROC) curve analysis identified PSA = 0.47 ng/mL as optimal cut-off which discriminates metastatic relapse after salvage radiotherapy. Area under curve (AUC) 0.75 with sensitivity of 75%, specificity of 69%Back to article page