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Table 1 Dosimetric results for the PTV from 2-step and direct optimized IMRT for the tested TPS.

From: The impact of direct aperture optimization on plan quality and efficiency in complex head and neck IMRT

Parameter DAO KonRad DSS p
Median [Gy] 50.3 ± 0.1 50.3 ± 0.1 50.3 ± 0.1 -
V107% [%] 0.7 ± 0.4 1.2 ± 0.6 0.3 ± 0.5 a, b, c
V95% [%] 94.7 ± 0.8 94.2 ± 1.3 94.7 ± 1.1 a
V90% [%] 99.1 ± 0.4 98.7 ± 1.1 99.1 ± 0.4 -
HI [-] 0.13 ± 0.01 0.14 ± 0.01 0.12 ± 0.01 a, b, c
  1. Given is the median dose, the volume which receives 107%, 95% and 90% of the prescribed dose as well as the homogeneity index.
  2. Statistical significance (p < 0,05): a: Panther DAO vs KonRad, b: Panther DAO vs DSS, c: KonRad vs DSS,