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Table 2 Dosimetric results for spinal cord, brainstem, summed parotid glands and healthy tissue.

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

Organ Parameter DAO KonRad DSS p
Spinal cord D2% [Gy] 31.5 ± 1.1 30.0 ± 1.6 30.6 ± 1.4 a, b
Brainstem D2% [Gy] 31.0 ± 2.2 26.8 ± 2.6 27.2 ± 2.6 a, b
Summed Parotids DMedian [Gy] 21.0 ± 1.8 21.3 ± 2.1 19.7 ± 1.8 b, c
Healthy Tissue V5 Gy [%] 66.7 ± 5.4 73.5 ± 5.4 73.6 ± 4.2 a, b
Healthy Tissue V10 Gy [%] 53.8 ± 5.8 57.8 ± 5.2 59.4 ± 3.8 a, b, c
  1. Given is the dose in Gy to two percent of the volume of the spinal cord and brainstem, median dose to the parotid glands and the volume of healthy tissue receiving more than 5 Gy respective 10 Gy.
  2. Statistical significance (p < 0,05); a: Panther DAO vs KonRad, b: Panther DAO vs DSS, c: KonRad vs DSS