Characteristics
|
X-ray (n = 22)
|
Proton (n = 8)
|
p value
|
---|
Clinical target volume (cm3)
|
73.3 ± 52.6
|
206.1 ± 100.6
|
0.007
|
Total lung
|
Mean dose (cGy or CcGE)
|
809.8 ± 368.1
|
796.9 ± 475.2
|
0.938
|
V5 (%)
|
28.4 ± 9.7
|
23.1 ± 11.6
|
0.216
|
V10 (%)
|
19.8 ± 8.8
|
18.7 ± 10.5
|
0.782
|
V20 (%)
|
13.1 ± 8.1
|
14.3 ± 8.6
|
0.717
|
Heart
|
V45 (%)
|
0.2 ± 0.5
|
0.1 ± 0.2
|
0.855
|
Esophagus
|
Maximum dose (cGy or CcGE)
|
1588.5 ± 1030.2
|
1261.4 ± 1216.3
|
0.469
|
Mean dose (cGy or CcGE)
|
408.0 ± 301.4
|
257.9 ± 304.6
|
0.239
|
Spinal cord
|
Maximum dose (cGy or CcGE)
|
1141.4 ± 761.5
|
1487.0 ± 1491.0
|
0.548
|
- VD percentage volume of organ receiving ≥ D Gy
- Data are presented as mean ± SD