Fig 3. The univariate logistic normal tissue complication probability models with (a) IV20 and (b) AIV20 for symptomatic radiation pneumonitis in breast cancer patients treated with hybrid IMRT.
Abbreviation: IV20: ipsilateral lung volume received >20Gy (%); AIV20: absolute ipsilateral lung volume received >20Gy (cc); IMRT: intensity modulated radiotherapy.