Table 3 Percentage fulfillment of dose acceptance criteria before and after intra-fractional movement
PTV margin | TC1 (V100%PD > 95%) | TC2 (V95%PD > 99%) | Dmin > 90% (GTV) | TC1 /TC2/Dmin > 90% | V12Gy < 10 cc (Normal brain) | All criteria |
|---|---|---|---|---|---|---|
Original plan | ||||||
0 mm | 98.2% | 98.2% | 96.4% | 96.4% | 98.0% | 93.9% |
1 mm | 98.2% | 98.2% | 98.2% | 98.2% | 87.8% | 85.7% |
2 mm | 98.2% | 98.2% | 98.2% | 98.2% | 71.4% | 69.4% |
Simulated plan with intra-fraction movements | ||||||
0 mm | 85.7% (p < 0.001) | 78.6% (p < 0.001) | 76.8% (p < 0.001) | 73.2% (NA) | 98.0% (See Table 4) | 69.4% (NA) |
1 mm | 98.2% (p = 0.07) | 98.2% (p = 0.66) | 98.2% (p < 0.001) | 98.2% (NA) | 87.8% (See Table 4) | 85.7% (NA) |
2 mm | 98.2% (p = 0.18) | 98.2% (p = 0.16) | 98.2% (p < 0.001) | 98.2% (NA) | 71.4% (See Table 4) | 69.4% (NA) |