Table 5 Patient-averaged values of total monitor units (MUs) and MU reduction with respect to the optimal collimator angles, and p values for one way analysis of variance (ANOVA) with Bonferroni multiple comparison of the patient-averaged values of MU
From: Optimal collimator rotation based on the outline of multiple brain targets in VMAT
Std-VMAT | Colli-VMATPre (40°) | Colli-VMATPre (60°) | Colli-VMAT (40°) | Colli-VMAT (60°) | |
|---|---|---|---|---|---|
Average | 472 ± 235 | 400 ± 154 | 419 ± 168 | 390 ± 148 | 417 ± 167 |
MU reduction (%) | 0.0 | −15.4 | −11.3 | −17.4 | −11.8 |
Bonferroni adjusted p-values | |||||
Colli-VMATPre (40°) | 0.004 | – | – | – | – |
Colli-VMATPre (60°) | 0.011 | 0.029 | – | – | – |
Colli-VMAT (40°) | 0.010 | 0.012 | 0.046 | – | |
Colli-VMAT (60°) | 0.023 | 0.057 | 0.356 | 0.047 | – |