Figure 3 | Scientific Reports

Figure 3

From: Propensity-score-matched evaluation of the incidence of radiation pneumonitis and secondary cancer risk for breast cancer patients treated with IMRT/VMAT

Figure 3

Average dose volume histograms for the mean doses delivered to the ipsilateral lung in the groups (a) with/without RP and (b) the IMRT/VMAT, respectively. The self-fitted dose-response LKB RP NTCP curve (c). Scatter plots for the IV40 and NTCP between the IMRT and VMAT cohorts (d). Abbreviations: IMRT, intensity-modulated radiotherapy; VMAT, volumetric-modulated arc therapy; RP, radiation-induced pneumonitis; IV40: the volume of the ipsilateral lung receiving at least 40 Gy; the following parameters are similar; IV5∼IV50; DF, degrees of freedom; MD, mean dose to the ipsilateral lung; NTCP, normal tissue complication probability; LKB, Lyman-Kutcher-Burman; TD25, the dose predicting a 25% risk of complications; n, a parameter that considers the volume effect; m, a dimensionless model parameter for describing the slope of the dose-response curve.

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