FIGURE 1.
FIGURE 2.
FIGURE 3.
Mean dosimetric parameters of organs at risk (OARs) with ranges
| BT | VMAT | CK | p-value* | BT vs. VMAT** | BT vs. CK** | VMAT vs. CK** | ||
|---|---|---|---|---|---|---|---|---|
| Mandible | D2 (%) | 47.4 (29.2–73.4) | 92.2 (73.1–100.4) | 68.4 (39.3–87.3) | < 0.001 | < 0.001 | < 0.001 | < 0.001 |
| D0.1 (%) | 73.9 (1.7–93.9) | 101.8 (97.1–103.9) | 92.3 (72.7–100.7) | < 0.001 | < 0.001 | < 0.001 | NS | |
| Ipsilateral parotid gland | D2 (%) | 4.8 (2.5–11.9) | 7.3 (0.9–13.9) | 2.3 (0.3–6.7) | < 0.001 | 0.0011 | NS | < 0.001 |
| D0.1 (%) | 6.7 (3.5–19.0) | 13.8 (3.7–25.0) | 5.1 (0.3–12.3) | < 0.001 | < 0.001 | NS | < 0.001 | |
| Contralateral parotid gland | D2 (%) | 3. (0.0–7.6) | 6.8 (0.6–15.8) | 1.5 (0.0–4.7) | < 0.001 | 0.0018 | NS | < 0.001 |
| D0.1 (%) | 4.9 (0.0–11.9) | 10.9 (0.9–20.2) | 3.3 (0.3–14.0) | < 0.001 | 0.0105 | NS | 0.0020 | |
| Contralateral submandibular gland | D2 (%) | 7.3 (3.9–16.3) | 9.0 (0.8–17.7) | 3.6 (2.0–6.0) | 0.0098 | NS | 0.0198 | 0.0016 |
| D0.1 (%) | 9.4 (6.2–21.4) | 14.3 (2.1–23.1) | 5.6 (3.0–11.3) | 0.0098 | NS | 0.0146 | < 0.001 |
Mean dosimetric parameters of planning target volume (PTV) with ranges
| BT | VMAT | CK | p-value* | BT vs. VMAT** | BT vs. CK** | VMAT vs. CK** | |
|---|---|---|---|---|---|---|---|
| VPTV (cm3) | 12.5 (2.6–21.5) | 26.5 (7.7–42.6) | 17.5 (5.6–33.6) | < 0.001 | < 0.001 | 0.5553 | 0.0043 |
| Conformal index | 0.62 (0.48–0.80) | 0.84 (0.78–0.87) | 0.86 (0.79–0.93) | < 0.001 | < 0.001 | < 0.001 | 0.5480 |
| Homogenity index | DNR = 0.38 (0.30–0.50) | 0.09 (0.05 – 0.10) | 0.20 (0.17–0.20) | NA | NA | NA | < 0.001 |