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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