Table 5: Percentage of γ < 2%/2 mm within the volume extended 1 cm outside the metal implants regarding distance between target and metallic implants for one-arc, half-arc and two-arc VMAT plans of six patients.
Patient | Distance (cm) | γ < 2%/2 mm | ||
(target size (cm3)) [metal implant size (cm3)] | one-arc | half-arc | two-arc | |
Patient 1 (16.90) [4.8] | 4.81 | 99.52 | 98.54 | 99.59 |
3.31 | 98.69 | 97.12 | 99.00 | |
2.03 | 97.79 | 94.34 | 97.54 | |
1.06 | 96.17 | 92.77 | 96.40 | |
Patient 2 (27.40) [2.6] | 4.63 | 99.67 | 99.22 | 99.42 |
3.76 | 98.98 | 98.82 | 99.23 | |
1.87 | 99.08 | 97.76 | 99.16 | |
Patient 3 (29.50) [0.6] | 12.65 | 99.84 | 99.37 | 99.91 |
6.50 | 99.58 | 99.34 | 99.52 | |
4.29 | 99.51 | 99.42 | 99.56 | |
2.29 | 99.06 | 98.98 | 99.14 | |
Patient 4 (18.50) [2.9] | 4.07 | 99.21 | 99.07 | 99.44 |
2.92 | 98.94 | 98.31 | 98.90 | |
2.11 | 98.46 | 97.80 | 98.70 | |
1.49 | 98.19 | 96.47 | 98.61 | |
Patient 5 (51.77) [4.6] (24.12) [4.6] | 6.66 | 98.22 | 96.66 | 98.44 |
5.38 | 97.66 | 97.23 | 97.11 | |
4.37 | 97.33 | 96.74 | 97.01 | |
3.69 | 96.21 | 95.02 | 96.33 | |
6.16 | 97.58 | 97.01 | 97.90 | |
4.89 | 97.37 | 97.19 | 97.65 | |
3.74 | 96.64 | 95.88 | 97.21 | |
2.97 | 96.83 | 95.22 | 96.76 | |
Patient 6 (45.65) [0.9] (22.37) [0.9] | 4.25 | 99.39 | 99.63 | 99.26 |
3.54 | 98.78 | 98.10 | 99.09 | |
2.85 | 98.28 | 95.83 | 98.71 | |
3.94 | 99.85 | 99.87 | 99.80 | |
3.38 | 98.17 | 98.86 | 98.99 | |
2.07 | 98.57 | 97.82 | 98.26 |