Table 4 Means and standard deviations of dose volume histogram (DVH) metrics in target and normal organs over 13 patients. All plans were renormalized based on GTV median dose D50
PTVITV(i) | PTVVH(ii) | WCSCITV(iii) | WCSGTV(iv) | p-value < 0.05 | |
|---|---|---|---|---|---|
GTV | |||||
D98 (Gy) | 50.3 ± 0.6 (48.7–51.0) | 51.3 ± 1.0 (49.1–52.4) | 50.0 ± 1.4 (47.9–52.5) | 49.8 ± 1.2 (46.4–51) | (ii)-(iv) |
D50 (Gy) | 54.1 ± 0.2 (53.8–54.5) | 54.0 ± 0.0 (54.0–54.0) | 54.1 ± 0.3 (53.5–54.6) | 54.0 ± 0.0 (54.0–54.0) | |
D2 (Gy) | 56.7 ± 0.9 (55.1–58.8) | 56.0 ± 0.9 (55.1–57.7) | 57.0 ± 1.1 (55.0–58.9) | 56.8 ± 0.7 (55.8–58.4) | (ii)-(iii) |
Chest Wall | |||||
V30Gy (cm3) | 8.2 ± 7.9 (0.0–24.5) | 8.1 ± 6.4 (0.0–18.8) | 6.7 ± 4.8 (0.0–15.0) | 6.6 ± 4.8 (0.0–15.4) | |
Lung | |||||
V5Gy (cm3) | 17.1 ± 5.3 (2.6–13.6) | 17.9 ± 4.3 (2.9–11.7) | 17.4 ± 5.1 (2.6–11.9) | 16.7 ± 5.1 (2.4–12.3) | (ii)-(iv) |
V20Gy (cm3) | 6.6 ± 3.3 (7.7–30.0) | 6.7 ± 3.0 (8.0–26.8) | 6.2 ± 3.0 (7.4–28.7) | 6.1 ± 3.1 (7.1–28.4) | (ii)-(iii); (ii)-(iv) |
MLD (Gy) | 3.9 ± 1.6 (1.8–7.2) | 4.0 ± 1.3 (1.9–6.1) | 3.9 ± 1.4 (1.8–6.3) | 3.7 ± 1.3 (1.7–6.4) | (ii)-(iv) |