Table 4.
Comparison of dose distribution parameters for tumor target volume and OAR between ENI Group and INI Group
| Item | PTV volume (cm3) | GTV volume (cm3) | PTV Dmean (Gy) | GTV Dmean (Gy) | Lung volume (cm3) | MLD (Gy) | Lung V5 (%) | Lung V10 (%) | Lung V20 (%) | Lung V30 (%) | Thorax stomach Dmax (Gy) | Heart V30 (%) | SP Dmax (Gy) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ENI | 353.5±123.7 | 47.0±24.1 | 49.9±2.6 | 60.2±2.5 | 3167±321 | 13.1±1.6 | 55.9±6.7 | 43.1±5.0 | 27.6±2.6 | 18.3±1.6 | 54.5±4.4 | 41.1±9.5 | 43.8±1.7 |
| IFI | 210±82.2 | 36.1±13.1 | 51.0±3.5 | 60.5±1.5 | 3224±471 | 10.8±0.9 | 48.7±4.2 | 37.9±3.7 | 19.9±2.4 | 12.0±2.1 | 55.9±4.3 | 38.0±8.8 | 42.4±2.7 |
| F value | 0.454 | 4.755 | 1.660 | 1.281 | 3.405 | 4.141 | 8.668 | 4.345 | 5.141 | 3.889 | 0.019 | 0.025 | 5.385 |
| P value | 0.014 | 0.038 | 0.203 | 0.268 | 0.07 | 0.049 | 0.005 | 0.042 | 0.018 | 0.035 | 0.890 | 0.876 | 0.024 |
Abbreviations: GTV, gross tumor volume; PTV, planning target volume; Dmean, mean dose; Dmax, absolute maximal dose; MLD, mean of lung dose; SP, spinal cord.