Table 4.
Comparison of the dosimetric parameters (mean ± standard)of PTV and OARs.
| Parameters | VMATFFF (range) | VMATFF (range) | p | |
|---|---|---|---|---|
| PTV | D90 (Gy) | 50.0 ± 0.21 (50.0-50.12) | 50.0 ± 0.21 (50.0-50.13) | 0.35 |
| D2 (Gy) | 55.30 ± 0.45 (54.52-56.42) | 55.90 ± 0.50 (54.68-57.52) | <0.001 | |
| CR | 0.85 ± 0.02 (0.80-0.95) | 0.86 ± 0.02 (0.79-0.92) | 0.21 | |
| CI | 0.78 ± 0.06 (0.62-0.91) | 0.78 ± 0.07 (0.63-0.92) | 0.15 | |
| R50% | 4.88 ± 0.61 (3.29-6.72) | 4.98 ± 0.64 (3.96-6.88) | <0.001 | |
| GI | 5.21 ± 0.73 (3.52-6.64) | 5.33 ± 0.78 (3.55-6.91) | <0.001 | |
| Spinal cord | Dmax(Gy) | 7.29 ± 4.37 (1.52-26.46) | 7.44 ± 4.42 (1.63-26.55) | <0.001 |
| D0.25cc(Gy) | 6.60 ± 3.85 (1.23-22.7) | 6.81 ± 3.93 (1.3-22.75) | <0.001 | |
| D0.5cc (Gy) | 6.37 ± 3.66 (1.05-21.62) | 6.60 ± 3.88 (1.1-21.56) | <0.001 | |
| Esophagus | Dmax(Gy) | 6.95 ± 4.43 (0.04-24.72) | 7.08 ± 4.39 (0.05-23.94) | 0.011 |
| D5cc (Gy) | 3.71 ± 2.67 (0.37-16.13) | 3.81 ± 2.72 (0.44-15.74) | <0.001 | |
| Trachea | Dmax(Gy) | 5.12 ± 5.37 (0.03-23.16) | 5.20 ± 5.37 (0.03-23.77) | 0.13 |
| D4cc(Gy) | 3.11 ± 3.44 (0.01-13.81) | 3.06 ± 3.44 (0.02-13.95) | 0.25 | |
| Lung | D1000cc (Gy) | 1.21 ± 0.66 (0.08-4.10) | 1.34 ± 0.93 (0.08-5.22) | <0.001 |
| D1500cc (Gy) | 0.51 ± 0.37 (0.05-2.44) | 0.55 ± 0.40 (0.05-2.70) | <0.001 | |
| MLD(Gy) | 2.39 ± 0.78 (0.61-4.59) | 2.47 ± 0.80 (0.63-4.68) | <0.001 | |
| V5(%) | 12.10 ± 3.89 (2.11-24.15) | 13.04 ± 3.90 (2.42-24.35) | <0.001 | |
| V10(%) | 6.69 ± 2.47 (1.12-13.97) | 7.02 ± 2.42 (1.21-14.86) | 0.013 | |
| V20(%) | 3.01 ± 1.39 (0.14-6.96) | 3.07 ± 1.35 (0.14-7.27) | 0.016 | |
| Heart | D1500cc (Gy) | 5.48 ± 5.0 (0.06-36.48) | 5.61 ± 5.05 (0.05-36.13) | <0.001 |