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Table 2 Dosimetric parameters of PTV for whole and partial arc plans on the Trilogy and Halcyon

From: Treatment planning comparison of volumetric modulated arc therapy with the trilogy and the Halcyon for bilateral breast cancer

PTV T-4arc T-8arc H-4arc H-8arc P < 0.05
Dmean(Gy) 51.8 ± 0.2 51.6 ± 0.3 52.0 ± 0.2 52.2 ± 0. 2 c,d
D2(Gy) 53.5 ± 0.4 53.1 ± 0.6 53.6 ± 0.31 54.2 ± 0.47 b,c
D98(Gy) 48.4 ± 0.4 48.0 ± 0.6 48.5 ± 0.3 48.1 ± 0. 4 b,c
V107(%) 3.2 ± 2.4 1.4 ± 2.2 3.6 ± 2.8 11.1 ± 8.4 b,c
V110(%) 0.0 ± 0.1 0.0 ± 0.0 0.0 ± 0.0 0.4 ± 0.5 b
CI 0.87 ± 0.02 0.82 ± 0.04 0.86 ± 0.02 0.83 ± 0.03 a,b,c
HI(%) 10.3 ± 1.5 10.2 ± 2.1 10.1 ± 1.1 12.0 ± 1.4 b
  1. a: T-4arc versus T-8arc, b: H-4arc versus H-8arc, c: T-8arc versus H-4arc, d: T-4arc versus H-4arc
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Radiation Oncology

ISSN: 1748-717X

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