Figure 1From: Can exhaled NO fraction predict radiotherapy-induced lung toxicity in lung cancer patients?Time course of FeNO (a), alveolar NO and bronchial NO flux (b) in lung cancer patients (mean (SEM)). (a) FeNO measured at 50 ml/s (FeNO50) in the whole group (solid line, 65 patients), and in the subgroup who accepted to perform measurements at various exhalation flows to calculate alveolar NO and bronchial NO flux (dotted line, 21 patients). See text for comments.Back to article page