Table 1 Different dosimetrical paramters (i.e., conformity index (CI), gradient index (GI) and volume receiving 12Gy (V12), 10Gy (V10) and 5Gy (V5) for the different treatment techniques: multiple isocenter dynamic conformal arc (MIDCA), single isocenter DCA and volumetric modulated arc therapy (VMAT)
CI | GI | V12 (cc) | V10 (cc) | V5 (cc) | ||
|---|---|---|---|---|---|---|
1–3 lesions (n = 14) | MIDCA | 0.67 ± 0.06 | 3.9 ± 1.5 | 30.4 ± 24.6 | 39.5 ± 31.0 | 131.1 ± 107.6 |
SIDCA | 0.67 ± 0.07 | 3.3 ± 0.6 | 31.9 ± 24.9 | 41.6 ± 31.0 | 118.9 ± 85.1 | |
VMAT | 0.69 ± 0.20 | 5.3 ± 2.2 | 38.1 ± 28.9 | 52.9 ± 39.9 | 191.1 ± 174.1 | |
>3 lesions (n = 26) | MIDCA | 0.66 ± 0.08 | 4.9 ± 1.5 | 45.8 ± 32.2 | 68.2 ± 50.8 | 258.9 ± 175.8 |
SIDCA | 0.63 ± 0.08 | 4.5 ± 1.7 | 45.0 ± 34.8 | 62.3 ± 48.3 | 247.0 ± 219.0 | |
VMAT | 0.65 ± 0.14 | 8.5 ± 3.0 | 62.9 ± 49.6 | 98.0 ± 80.6 | 418.0 ± 246.3 | |
All lesions (n = 40) | MIDCA | 0.66 ± 0.07 | 4.5 ± 1.6 | 35.6 ± 26,4 | 49.0 ± 38.1 | 173.7 ± 138.0 |
SIDCA | 0.65 ± 0.08 | 3.9 ± 1.4 | 36.3 ± 27.1 | 48.5 ± 35.9 | 161.6 ± 143.6 | |
VMAT | 0.67 ± 0.16 | 7.1 ± 3.1 | 46.3 ± 35.9 | 67.9 ± 55.9 | 266.7 ± 216.7 |