TABLE 3.
Calculated doses compared to measured dose for different material assignments, anthropomorphic phantom with largest clinically realistic cement dimensions.
| Energy/mode | Field size (cm) | ABS Average %diff (Eclipse calc vs Measured) | |||||
|---|---|---|---|---|---|---|---|
| PVC | PTFE | Titanium | CT HU | ||||
| Acuros XB | AAA | Acuros XB | AAA | Acuros XB | AAA | ||
| 6X | 3x3 | 7.9 | 6.5 | 6.0 | 4.1 | 9.5 | 7.4 |
| 5x5 | 7.5 | 5.9 | 5.8 | 3.9 | 8.8 | 6.5 | |
| 10x10 | 6.4 | 4.8 | 4.8 | 2.6 | 8.6 | 6.6 | |
| VMAT | 3.3 | 7.0 | |||||
| 6SRS | 3x3 | 7.8 | 6.4 | 5.9 | 4.0 | 9.7 | 7.9 |
| 5x5 | 7.5 | 5.9 | 5.8 | 3.8 | 9.4 | 7.4 | |
| 10x10 | 6.2 | 4.5 | 4.6 | 3.3 | 9.2 | 7.4 | |
| VMAT | 3.3 | 8.0 | |||||
| 6FFF | 3x3 | 7.5 | 6.9 | 5.4 | 4.2 | 10.3 | 7.6 |
| 5x5 | 7.0 | 6.6 | 5.2 | 4.3 | 9.8 | 6.8 | |
| 10x10 | 5.6 | 5.3 | 3.9 | 3.2 | 9.6 | 6.9 | |
| 10X | 3x3 | 6.9 | 5.7 | 5.2 | 4.3 | 7.5 | 4.5 |
| 5x5 | 6.0 | 4.0 | 4.2 | 2.4 | 7.5 | 4.4 | |
| 10x10 | 5.7 | 3.7 | 3.9 | 2.2 | 7.5 | 4.7 | |
| 10FFF | 3x3 | 6.6 | 5.1 | 4.8 | 3.4 | 8.0 | 5.0 |
| 5x5 | 6.1 | 4.2 | 4.3 | 2.5 | 8.1 | 5.0 | |
| 10x10 | 5.3 | 3.4 | 3.5 | 1.7 | 8.0 | 5.2 | |
| VMAT | 2.9 | 6.3 | |||||
| Average % diff all modes: | 6.7 | 5.2 | 4.6 | 4.0 | 8.8 | 6.2 | |
PVC, polyvinyl chloride, PTFE, polytetrafluoroethylene; CT, computed tomography (CT); HU, Hounsfield units.