Table 2.
Gamma Agreement Index GAI
| 6X | 15X | ||||
|---|---|---|---|---|---|
| LF | SF | LF | SF | ||
| Dose to medium | |||||
| NormalLung | Acuros XB | 99.9 | 99.6 | 100.0 | 100.0 |
| AAA | 91.2 | 91.6 | 98.9 | 66.6 | |
| LightLung | Acuros XB | 85.6 | 90.1 | 81.5 | 85.5 |
| AAA | 47.9 | 6.3 | 18.4 | 1.6 | |
| Bone | Acuros XB | 99.9 | 99.8 | 100.0 | 100.0 |
| AAA | 62.2 | 41.8 | 100.0 | 100.0 | |
| Dose to water | |||||
| NormalLung | Acuros XB | 99.8 | 99.2 | 100.0 | 99.3 |
| AAA | 97.1 | 95.8 | 98.0 | 48.2 | |
| LightLung | Acuros XB | 83.5 | 90.5 | 83.8 | 90.0 |
| AAA | 34.8 | 6.1 | 12.2 | 1.6 | |
| Bone | Acuros XB | 89.0 | 75.8 | 90.5 | 72.7 |
| AAA | 79.8 | 97.4 | 18.3 | 12.6 | |
| Dose rescaled to water | |||||
| NormalLung | Acuros XB | 99.9 | 98.7 | 99.9 | 99.3 |
| AAA | 99.5 | 93.3 | 97.6 | 51.8 | |
| LightLung | Acuros XB | 81.0 | 88.6 | 78.6 | 85.6 |
| AAA | 29.9 | 6.0 | 7.8 | 1.6 | |
| Bone | Acuros XB | 99.9 | 99.8 | 99.9 | 99.9 |
| AAA | 100.0 | 100.0 | 100.0 | 100.0 | |
3%, 3 mm thresholds in the area of the insert included in the beam in the plane parallel to the beam central axis passing through the isocentre. Benchmark dose: VMC++, test dose: AAA or Acuros XB version 10.
LF = large field, SF = small field