621 / 1173
Seppenwoolde et al.
Int J Radiat Oncol Biol Phys
2003;55:724-35
Complications versus mean lung dose
0.0
0.2
0.4
0.6
0.8
1.0
0
10
20
30
Mean Lung Dose (Gy)
Incidence of radiation pneumonitis grade ≥2
TD
50
= 30.8 Gy
2/3
0/1
0/16
0/50
3/54 3/79
13/82
18/75
5/22
n = 0.99
m = 0.37