|
ΔRGS
|
MLD (Gy)
|
V5 (%)
|
V10 (%)
|
V20 (%)
|
V30 (%)
|
V40 (%)
|
V50 (%)
|
V60 (%)
|
|---|
|
1
|
12.4 ± 3.2
|
38.4 ± 7.4
|
30.6 ± 6.5
|
25.3 ± 6.0
|
17.2 ± 6.0
|
21.6 ± 5.4
|
17.2 ± 6.0
|
11.7 ± 5.9
|
|
2
|
15.0 ± 2.8
|
46.3 ± 11.8
|
35.8 ± 9.9
|
30.4 ± 7.6
|
21.3 ± 5.5
|
26.8 ± 5.8
|
21.3 ± 5.5
|
15.4 ± 6.3
|
|
3
|
16.5 ± 2.5
|
52.8 ± 1.8
|
41.2 ± 0.2
|
30.6 ± 5.5
|
22.5 ± 6.4
|
26.9 ± 6.3
|
22.5 ± 6.4
|
19.1 ± 5.3
|
|
0
|
15.6 ± 3.1
|
48.7 ± 9.8
|
36.1 ± 5.6
|
30.5 ± 4.8
|
22.7 ± 6.4
|
27.3 ± 5.2
|
22.6 ± 6.4
|
16.6 ± 5.4
|
|
P value
|
0.03
|
0.02
|
0.08
|
0.15
|
0.15
|
0.05
|
0.15
|
0.12
|
- RGS, radiation-induced lung injury grading scale; ΔRGS, change in RGS on computed tomography scans performed one and four months after radiation therapy; MLD, mean lung dose; Vx (%), percent of the total lung volume receiving X Gy
