Table 3: Percentage of γ < 2%/2 mm within the volume extended 1 cm outside the metal implants regarding target size for one-arc, half-arc and two-arc VMAT plans of six patients.
Patient | Target size (cm3) | γ < 2%/2 mm | ||
[metal implant size(cm3)] | one-arc | half-arc | two-arc | |
Patient 1 [4.8] | 160.80 | 98.69 | 94.21 | 98.76 |
121.50 | 99.78 | 99.24 | 99.71 | |
39.10 | 99.76 | 98.32 | 99.74 | |
16.90 | 99.52 | 98.54 | 99.69 | |
Patient 2 [2.6] | 82.46 | 98.63 | 97.64 | 99.42 |
60.13 | 99.04 | 98.96 | 99.44 | |
27.40 | 98.98 | 98.82 | 99.23 | |
17.78 | 99.13 | 98.60 | 99.17 | |
Patient 3 [0.6] | 85.09 | 99.76 | 99.20 | 99.88 |
49.41 | 99.81 | 99.19 | 99.85 | |
29.50 | 99.84 | 99.37 | 99.91 | |
Patient 4 [2.9] | 55.08 | 99.36 | 99.27 | 99.56 |
37.45 | 99.25 | 99.03 | 99.33 | |
18.50 | 99.20 | 99.07 | 99.44 | |
Patient 5 [4.6] | 66.77 | 98.65 | 97.13 | 98.32 |
51.77 | 98.22 | 96.66 | 98.44 | |
24.12 | 97.59 | 97.01 | 97.90 | |
Patient 6 [0.9] | 63.40 | 97.40 | 96.37 | 98.57 |
45.65 | 98.28 | 95.83 | 98.71 | |
22.37 | 98.57 | 97.83 | 98.26 |