Table 4.
Mean target coverage and doses to organ at risks in two arms.
| Radiotherapy Technique | ||||
|---|---|---|---|---|
| Open Technique (N=19) Mean ± SD | 3DCRT (N=21) Mean ± SD | Df | P-value | |
| PTV Coverage | 98.34% ± 0.014 | 97.44% ± 0.013 | 38 | 0.822 |
| Spinal Cord | 44.00 ± 10.07 | 44.71 ±1.11 | 38 | 0.097 |
| Brain Stem | 42.88± 10.41 | 41.30 ± 7.96 | 38 | 0.294 |
| Left Parotid | 51.98± 13.66 | 47.95± 5.70 | 38 | 0.202 |
| Right Parotid | 51.75± 13.83 | 46.74 ± 10.20 | 38 | 0.866 |
SD: Standard Deviation, 3DCRT: Three-Dimensional Conformal Radiotherapy, Df: Degree of freedom, PTV: Planning Target Volume