Table 1.
Comparison of the average dose parameters of 15 patients for the PTV among the three planning techniques.
| PTV | 3F-CRT | 4F-CRT | IMRT | P-Value | ||
|---|---|---|---|---|---|---|
| 3F-CRT vs IMRT | 4F-CRT vs IMRT | 3F-CRT vs 4F-CRT | ||||
| Dmean (%) | 101.80 ± 1.31 | 101.85 ± 1.02 | 100.44 ± 0.45 | <0.001 | <0.001 | 0.914 |
| Dmax (%) | 108.96 ± 1.45 | 108.81 ± 1.03 | 106.09 ± 1.28 | <0.001 | <0.001 | 0.751 |
| D1% (%) | 107.00 ± 1.48 | 106.85 ± 1.11 | 103.89 ± 0.77 | <0.001 | <0.001 | 0.699 |
| TV95% (%) | 98.79 ± 1.31 | 98.95 ± 1.07 | 97.94 ± 1.29 | 0.08 | 0.026 | 0.697 |
| SD (%) | 2.43 ± 0.50 | 2.37 ± 0.54 | 1.91 ± 0.37 | 0.003 | 0.011 | 0.753 |
| UI | 1.08 ± 0.02 | 1.08 ± 0.02 | 1.06 ± 0.01 | <0.001 | 0.005 | 0.388 |
| CI | 0.62 ± 0.04 | 0.61 ± 0.04 | 0.81 ± 0.07 | 0.039 | <0.001 | 0.839 |
| HI | 0.12 ± 0.02 | 0.11 ± 0.02 | 0.10 ± 0.02 | <0.001 | 0.108 | 0.692 |
Dmean, mean dose; Dmax, maximum dose; D1%, dose to 1% of target volume; TV95%, dose to 95% of target volume; UI, uniformity index; CI, conformity index; HI, homogeneity index; SD, standard deviation of dose in the PTV.