Table 7 - Correlations between the gamma passing rates and the modulation complexity score
Gamma criteria | MapCHECK2 measurements | ArcCHECK measurements | ||||||
|---|---|---|---|---|---|---|---|---|
Global gamma passing rates | Local gamma passing rates | Global gamma passing rates | Local gamma passing rates | |||||
r | p | r | p | r | p | r | p | |
Trilogy (C-series linac) | ||||||||
3%/3 mm | 0.193 | 0.023 | 0.448 | < 0.001 | – | – | 0.340 | < 0.001 |
2%/2 mm | 0.268 | 0.001 | 0.392 | < 0.001 | – | – | 0.378 | < 0.001 |
2%/1 mm | 0.433 | < 0.001 | 0.352 | < 0.001 | – | – | 0.529 | < 0.001 |
1%/2 mm | 0.311 | < 0.001 | 0.238 | 0.005 | – | – | 0.282 | 0.001 |
1%/1 mm | 0.482 | < 0.001 | 0.268 | 0.001 | – | – | 0.453 | < 0.001 |
TrueBeam STx | ||||||||
3%/3 mm | – | – | – | – | −0.243 | 0.015 | – | – |
2%/1 mm | – | – | – | – | − 0.196 | 0.050 | – | – |