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Table 3 The relationship between the dose volume histogram parameters and the incidence of grade 3–5 pneumonitis

From: The clinical results of proton beam therapy in patients with idiopathic pulmonary fibrosis: a single center experience

  Grade ≥3 pneumonitis (n = 2) Grade ≤2 pneumonitis (n = 14) p value
mean ± SD mean ± SD
MLD 7.4 ± 4.5 5.0 ± 2.6 0.333
Lung V5 16.5 ± 9.3 12.3 ± 5.3 0.417
Lung V10 14.6 ± 8.8 10.8 ± 4.9 0.500
Lung V15 13.4 ± 8.2 9.7 ± 4.6 0.417
Lung V20 12.4 ± 7.8 8.8 ± 4.3 0.333
Lung V25 11.6 ± 7.3 8.0 ± 4.0 0.333
Lung V30 10.8 ± 6.9 7.3 ± 3.8 0.333
  1. Abbreviations: MLD mean lung dose, SD standard deviation