Table 3 - Correlations between the gamma passing rates of MapCHECK2 and ArcCHECK
Gamma criteria | Global gamma passing rates | Local gamma passing rates | ||
|---|---|---|---|---|
r | p | r | p | |
Trilogy (C-series linac) | ||||
3%/3 mm | – | – | 0.242 | 0.004 |
2%/2 mm | – | – | 0.288 | 0.001 |
2%/1 mm | – | – | 0.260 | 0.002 |
1%/2 mm | – | – | 0.266 | 0.001 |
1%/1 mm | – | – | 0.202 | 0.016 |
TrueBeam STx (SABR + non-SABR) | ||||
3%/3 mm | – | – | 0.365 | < 0.001 |
2%/2 mm | – | – | 0.412 | < 0.001 |
2%/1 mm | – | – | 0.528 | < 0.001 |
1%/2 mm | – | – | 0.468 | < 0.001 |
1%/1 mm | – | – | 0.589 | < 0.001 |
TrueBeam STx (SABR) | ||||
3%/3 mm | – | – | 0.355 | 0.005 |
2%/2 mm | – | – | 0.263 | 0.042 |
2%/1 mm | 0.273 | 0.035 | 0.381 | 0.003 |
1%/2 mm | – | – | 0.275 | 0.033 |
1%/1 mm | – | – | 0.413 | 0.001 |
TrueBeam STx (non-SABR) | ||||
3%/3 mm | – | – | 0.369 | 0.019 |
2%/2 mm | – | – | 0.629 | < 0.001 |
2%/1 mm | – | – | 0.729 | < 0.001 |
1%/2 mm | – | – | 0.637 | < 0.001 |
1%/1 mm | – | – | 0.745 | < 0.001 |