Table 4.
Mean, standard deviation and range of dose‐volume metrics for clinical target volume (CTV), planning target volume (PTV), penile bulb bladder and rectum
| Plan/metric | Pre_IMRT | CRW_IMRT | RW_IMRT | Pre_VMAT | CRW_VMAT | RW_VMAT |
|---|---|---|---|---|---|---|
| CTV mean dose (%) | 102.0 ± 0.7 (100.5–102.9) | 102.4 ± 0.3 (101.9–102.7) | 102.4 ± 0.3 (102.1–102.8) | 102.1 ± 0.2 (101.8–102.6) | 102.1 ± 0.1 (101.8–102.3) | 102.0 ± 0.1 (101.7–102.1) |
| PTV mean dose (%) | 101.6 ± 0.7 (100.1–102.4) | 101.8 ± 0.2 (101.4–102.3) | 101.8 ± 0.2 (101.5–102.1) | 101.7 ± 0.1 (101.6–101.9) | 101.8 ± 0.1 (101.5–101.9) | 101.8 ± 0.2 (101.5–102.3) |
| PB mean dose (%) | 15.2 ± 12.9 (5.8–51.9) | 16.8 ± 16.9 (5.4–66.9) | 16.9 ± 17.0 (5.7–67.7) | 14.0 ± 11.7 (4.7–45.5) | 16.4 ± 17.4 (5.0–68.4) | 16.6 ± 17.3 (5.0–68.0) |
| BV60 Gy (%) | 3.4 ± 1.3 (1.3–5.6) | 3.7 ± 1.5 (0.9–6.8) | 3.6 ± 1.6 (0.9–6.5) | 3.1 ± 1.4 (1.2–6.4) | 3.6 ± 1.6 (1.0–7.4) | 3.6 ± 1.6 (1.0–7.4) |
| BV55 Gy (%) | 6.3 ± 2.9 (2.1–13.5) | 6.6 ± 2.8 (1.8–12.4) | 6.6 ± 2.8 (1.7–12.2) | 5.4 ± 2.4 (2.0–10.7) | 5.9 ± 2.5 (1.7–11.5) | 5.9 ± 2.5 (1.6–11.4) |
| BV50 Gy (%) | 8.4 ± 3.9 (2.8–17.8) | 8.8 ± 3.8 (2.5–16.9) | 8.8 ± 3.7 (2.4–16.7) | 7.3 ± 3.2 (2.6–13.7) | 7.8 ± 3.1 (2.4–14.9) | 7.7 ± 3.2 (2.2–14.7) |
| BV46 Gy (%) | 10.1 ± 4.7 (3.3–20.9) | 10.6 ± 4.6 (3.2–20.9) | 10.7 ± 4.6 (3.1–21.0) | 9.0 ± 3.9 (3.2–16.4) | 9.5 ± 3.7 (3.1–17.9) | 9.4 ± 3.8 (2.8–17.8) |
| BV37 Gy (%) | 15.7 ± 7.6 (4.7–29.8) | 15.8 ± 6.3 (6.0–29.2) | 16.0 ± 6.2 (5.8–29.5) | 14.5 ± 6.8 (5.0–24.8) | 15.2 ± 5.6 (6.0–27.2) | 14.7 ± 5.6 (5.1–26.2) |
| RV60 Gy (%) | 1.1 ± 0.9 (0.0–2.5) | 0.2 ± 0.3 (0.0–0.8) | 0.2 ± 0.4 (0.0–1.4) | 1.6 ± 1.7 (0.0–6.2) | 0.3 ± 0.5 (0.0–1.8) | 0.3 ± 0.4 (0.0–1.3) |
| RV55 Gy (%) | 5.4 ± 4.6 (0.5–16.5) | 1.6 ± 2.4 (0.0–7.8) | 1.2 ± 2.0 (0.0–6.6) | 5.2 ± 4.0 (0.8–13.5) | 1.5 ± 2.1 (0.0–6.7) | 1.1 ± 1.7 (0.0–5.7) |
| RV50 Gy (%) | 8.5 ± 6.6 (1.3–22.8) | 3.3 ± 4.2 (0.0–14.1) | 2.4 ± 3.6 (0.0–11.6) | 8.3 ± 5.4 (2.4–19.0) | 3.1 ± 3.3 (0.1–11.0) | 2.2 ± 3.1 (0.0–9.8) |
| RV46 Gy (%) | 11.0 ± 7.9 (2.2–26.7) | 5.3 ± 5.5 (0.2–18.8) | 3.9 ± 4.9 (0.1–16.3) | 11.2 ± 6.5 (4.3–23.6) | 5.1 ± 4.3 (0.6–14.8) | 3.4 ± 4.3 (0.1–13.4) |
| RV37 Gy(%) | 18.2 ± 10.3 (5.0–35.6) | 12.4 ± 8.0 (1.7‐29.1) | 10.3 ± 8.1 (1.2‐27.5) | 21.6 ± 8.5 (11.3‐37.4) | 15.7 ± 7.3 (5.4‐26.9) | 10.4 ± 7.9 (2.2‐25.2) |
CRW: composite rectum wall; IMRT: intensity modulated radiotherapy; RW: rectal wall; VMAT: volumetric modulated arc therapy.