Table 3.
Results of the influence of ITV margins (ITV), 3 mm isotropic margins (I3), 3 mm + 3% range margins (R3), and a combination of the two last ones (I3 + R3) on V95 and CN.
Simulations | Margins |
V
95 (%) |
CN |
V 95 > 95% (%) | ||||
---|---|---|---|---|---|---|---|---|
Min. | Mean | Max. | Min. | Mean | Max. | |||
3D0 | ITV | 96.6 | 99.1 | 99.9 | 0.53 | 0.68 | 0.88 | 100 |
I3 | 95.9 | 98.8 | 100 | 0.45 | 0.68 | 0.87 | 100 | |
R3 | 96.7 | 99.4 | 100 | 0.37 | 0.51 | 0.72 | 100 | |
I3 + R3 | 96.2 | 99.1 | 100 | 0.34 | 0.53 | 0.73 | 100 | |
4D0 | ITV | 62.6 | 94.7 | 99.9 | 0.45 | 0.64 | 0.83 | 66.7 |
I3 | 76.5 | 95.9 | 100 | 0.36 | 0.53 | 0.73 | 70.4 | |
R3 | 73.4 | 96.3 | 100 | 0.35 | 0.50 | 0.70 | 74.1 | |
I3 + R3 | 77.2 | 96.6 | 100 | 0.29 | 0.42 | 0.62 | 75.3 | |
4DN | ITV | 42.8 | 85.1 | 99.3 | 0.14 | 0.50 | 0.81 | 21.9 |
I3 | 57.8 | 90.5 | 99.7 | 0.15 | 0.46 | 0.75 | 40.4 | |
R3 | 56.6 | 92.8 | 100 | 0.18 | 0.45 | 0.75 | 56.3 | |
I3 + R3 | 62.8 | 94.8 | 100 | 0.17 | 0.39 | 0.67 | 68.7 |
Each margins case of the 3D0 calculations was done using the 3 foci described previously. In the case of 4D0 and 4DN values, the 9 possible focus/GW combinations presented previously were used.