Fig. 4From: Dosimetric parameters predict radiation-induced choanal stenosis in patients with nasopharyngeal carcinomaReceiver operating characteristic curves of dosimeric parameters on predicting radiation-induced choanal stenosis. a: mean dose (Dmean); b: dose covering ≥33% volume (D33); c: dose covering ≥66% volume (D66); d: volume receiving ≥60 Gy (V60). Abbreviations: AUC, area under curveBack to article page