Table 5.
TBCC | CCI | |||||||
---|---|---|---|---|---|---|---|---|
Test case | 6 MV (%) | 15 MV (%) | 6 MV (%) | 15 MV (%) | ||||
1. Open square fields | 0.4 | 1.3 | 0.3 | 1.0 | ||||
— | — | 0.6 | 0.6 | |||||
0.5 | 0.4 | 0.6 | 0.7 | |||||
2. Extended source‐to‐surface distance | 0.6 | 1.5 | 0.9 | 1.1 | ||||
0.5 | 0.5 | 0.5 | 0.3 | |||||
3. Rectangular fields | 0.3 | 0.8 | 0.6 | 0.9 | ||||
0.4 | 0.8 | 0.0 | 0.6 | |||||
4a. Wedged fields | 1.4 | 1.0 | 1.4 |
|
||||
1.2 | 1.0 | 0.5 |
|
|||||
1.1 |
|
0.5 |
|
|||||
4b. Open collimator, 45 degrees | 0.3 | 0.1 | — | — | ||||
Wedged collimator, 45 degrees | 1.1 | 1.1 | 1.0 |
|
||||
5. Mantle field | 0.5 |
|
0.9 | 1.3 | ||||
6. Isocentric | 0.0 |
|
0.1 | 0.2 | ||||
7. Oblique incidence |
|
|
|
0.4 | ||||
|
|
|
1.0 | |||||
8. Asymmetric fields | 0.3 |
|
— | — | ||||
1.4 | 0.3 |
|
|
|||||
9. Oblique, wedged |
|
0.5 | 0.4 |
|
||||
10. Multileaf collimator shaped | 0.7 | 1.5 | 0.7 | 1.2 | ||||
Mean | 0.4 | 0.3 | 0.3 | 0.2 | ||||
Range | 1.4 | 1.5 | 1.4 | 1.3 | ||||
|
|
|
|
Discrepancies greater than 2% are bolded.