Table 5.
Summary of lung dose and critical organs for anatomic and functional treatment plans among 11 thoracic cancer patients
| Metric | Anatomic planning | Functional planning |
|---|---|---|
| Total lung | ||
| V5 (%) |
42.77 ± 16.97 |
36.97 ± 17.05 |
| V20(%) |
20.44 ± 6.99 |
18.12 ± 8.11 |
| MLD (Gy) |
11.24 ± 4.03 |
10.19 ± 4.36 |
| 20% Functional lung | ||
| V5 (%) |
34.76 ± 19.21 |
28.61 ± 19.45 |
| V20(%) |
15.22 ± 8.59 |
12.57 ± 8.85 |
| MLD (Gy) |
8.61 ± 4.35 |
7.38 ± 4.59 |
| Heart | ||
| V40 (%) |
16.75 ± 15.05 |
21.87 ± 23.12 |
| Mean dose (Gy) |
16.7 ± 12.78 |
17.31 ± 13.95 |
| Spinal cord | ||
| Maximun (Gy) |
41.58 ± 5.73 |
43.31 ± 4.5 |
| Esophagus | ||
| V35 (%) |
20.36 ± 16.14 |
24.15 ± 17.36 |
| V50 (%) |
11.57 ± 16.95 |
11.57 ± 16.96 |
| Mean dose (Gy) | 15.34 ± 9.23 | 16.22 ± 9.31 |
Abbreviations:
VX(%): volume of an OAR receiving ≧ X Gy; MLD: Mean lung dose; Data presented as mean ± standard deviation.