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Table 1 Average volumes (%) of critical organs and targets at specific dose levels (Gy RBE) for the three treatment techniques, PWTF, P/E, and 3D CPT, with the range of values shown in parentheses

From: Proton radiotherapy for chest wall and regional lymphatic radiation; dose comparisons and treatment delivery

Vol (%)

Dose levels

PWTF

P/E

3D CPT

Heart

V5Gy

20.9 (14.1–29.2)

35.6 (28.6–45.7)

4.1 (2.6–7.6)

V10Gy

14.9 (8.9–21.9)

22.7 (15.2–31.8)

2.8 (1.6–6.1)

V20Gy

12.0 (6.6–18.4)

12.4 (6.3–18.9)

1.6 (0.6–4.5)

V45Gy

6.9 (2.8–12.4)

2.2 (0.1–5.5)

0.3 (0.0–1.6)

Lung

V5Gy

33.2 (12.1–50.0)

46.3 (28.1–70.4)

25.2 (9.8–36.2)

V10Gy

28.5 (10.0–42.5)

32.2 (17.0–55.7)

21.3 (8.0–31.8)

V20Gy

25.3 (8.7–36.3)

21.7 (11.8–39.5)

16.2 (5.9–25.9)

Chestwall

V45Gy

96.6 (92.6–99.4)

94.9 (88.8–99.0)

99.9 (98.7–100.0)

V47.5Gy

93.6 (87.3–97.7)

90.0 (81.6–95.8)

99.6 (98.1–100.0)

IMN

V45Gy

98.1 (90.6–100.0)

94.0 (84.3–100.0)

100.0 (99.7–100.0)

V47.5Gy

96.6 (86.5–100.0)

91.8 (80.5–99.7)

99.9 (99.0–100.0)

Level 1

V45Gy

90.4 (69.2–100.0)

93.8 (70.2–100.0)

99.9 (99.7–100.0)

V47.5Gy

85.7 (52.7–100.0)

91.4 (60.5–100.0)

99.6 (98.8–100.0)

Level 2

V45Gy

95.0 (76.3–100.0)

93.5 (81.7–100.0)

100.0 (100.0–100.0)

V47.5Gy

89.9 (56.4–99.8)

90.7 (70.5–100.0)

100.0 (100.0–100.0)

Level 3

V45Gy

97.6 (92.2–100.0)

85.5 (73.5–99.2)

100.0 (99.9–100.0)

V47.5Gy

93.7 (82.2–100.0)

82.4 (71.0–98.5)

96.8 (92.8–100.0)

SCV

V45Gy

98.2 (93.1–100.0)

98.6 (97.2–100.0)

98.6 (92.0–100.0)

V47.5Gy

95.9 (91.8–100.0)

95.7 (87.3–100.0)

95.0 (89.0–100.0)