Table 2.
Summary of DVH results of PTV coverage and organ-at-risk sparing showing average values ± standard deviation
| Structure | Parameter | HA | HAMCO | AutoNTO | AutoNTOMCO |
|---|---|---|---|---|---|
| PTV | PTVD99% (Gy) | 52.52 ± 0.62 | 52.99 ± 0.48 | 53.04 ± 0.37 | 53.11 ± 0.42 |
| PTVD1% (Gy) | 64.60 ± 3.10 | 57.37 ± 1.50 | 61.41 ± 1.65 | 58.08 ± 1.66 | |
| CIPaddick | 0.85 ± 0.06 | 0.80 ± 0.08 | 0.82 ± 0.05 | 0.79 ± 0.06 | |
| GI | 2.86 ± 0.59 | 3.14 ± 0.63 | 3.61 ± 1.04 | 3.54 ± 0.80 | |
| Optic chiasm | D0.035 cm3 (Gy) | 54.93 ± 2.67 | 52.06 ± 1.42 | 52.32 ± 2.34 | 52.40 ± 0.89 |
| Brainstem | D0.035 cm3 (Gy) | 44.23 ± 15.50 | 43.40 ± 16.50 | 46.42 ± 13.92 | 44.10 ± 15.77 |
| OpticNerve(L) | D0.035 cm3 (Gy) | 38.36 ± 18.81 | 34.61 ± 18.50 | 37.10 ± 17.28 | 35.24 ± 18.49 |
| OpticNerve(R) | D0.035 cm3 (Gy) | 40.89 ± 19.24 | 38.14 ± 17.86 | 40.67 ± 15.69 | 39.75 ± 16.46 |
| Normal brain | NBrainMean (Gy) | 5.95 ± 2.42 | 6.42 ± 2.63 | 7.20 ± 3.046 | 7.32 ± 3.16 |
| NBrainV20Gy (cc) | 47.96 ± 26.95 | 58.12 ± 33.11 | 79.13 ± 48.27 | 82.13 ± 50.75 | |
| Monitor units (MU) | 742 ± 165 | 885 ± 179 | 1307 ± 383 | 1269 ± 438 |
Abbreviations: CI = conformity index; DVH = dose volume histogram; GI = gradient index; HA = HyperArc; MCO = multicriteria optimization; NTO = normal tissue objective; PTV = planning target volume.