Field size (cm2) | 3x3 | 5x5 | 10x10 | |||||
---|---|---|---|---|---|---|---|---|
Scenario | b | c | b | c | b | c | ||
Dose difference (%) | PTV | at sinusitis | 14.03 | 17.00 | 7.90 | 8.27 | 8.05 | 8.50 |
after sinusitis | -2.64 | -5.10 | -2.82 | -5.14 | -3.14 | -6.06 | ||
2D GPRs (%) | 94.50 | 94.50 | 96.90 | 96.90 | 92.60 | 92.50 |
PTV: planning target volume, GPRs: gamma passing rates