Table 4 Comparison of VOI doses and gamma passing rates for all ten cases (Case 1–3 are phantom cases, 4–10 are clinical cases). Gamma analysis performed using 2% (global) / 1 mm criteria with a 10% dose threshold
From: Benchmarking Monte-Carlo dose calculation for MLC CyberKnife treatments
Case number | PTV mean dose IDC [Gy] | PTV mean dose Precision MC [Gy] | PTV mean dose change (IDC – Precision MC) / Precision MC [%] | Lung V20 IDC [%] | Lung V20 Precision MC [%] | Lung V20 change (IDC – Precision MC) / Precision MC [%] | Gamma passing rate [%] |
|---|---|---|---|---|---|---|---|
1 | 39.1 | 39.1 | 0.0 | 96.2 | |||
1 FSPB | 43.1 | −9.3 | 36.2 | ||||
2 | 36.8 | 37.1 | −0.8 | 99.9 | |||
3 | 38.3 | 38.7 | −1.0 | 99.9 | |||
4 | 56.4 | 55.6 | 1.4 | 11.9 | 11.7 | 1.5 | 99.6 |
5 | 54.0 | 54.2 | −0.4 | 7.5 | 7.7 | −1.5 | 98.1 |
6 | 58.7 | 58.7 | 0.0 | 2.9 | 2.9 | 0.0 | 99.7 |
7 | 56.4 | 55.1 | 2.3 | 1.0 | 1.0 | 0.0 | 99.4 |
8 | 66.9 | 67.6 | −1.0 | 2.3 | 2.3 | 0.9 | 98.2 |
9 | 55.7 | 55.5 | 0.4 | 6.7 | 6.7 | 0.3 | 99.0 |
10 | 56.2 | 55.7 | 0.9 | 1.1 | 1.1 | 0.0 | 99.6 |