Skip to main content

Table 2 Gamma Agreement Index GAI

From: Dosimetric evaluation of Acuros XB Advanced Dose Calculation algorithm in heterogeneous media

   6X 15X
   LF SF LF SF
Dose to medium     
NormalLung Acuros XB 99.9 99.6 100.0 100.0
  AAA 91.2 91.6 98.9 66.6
LightLung Acuros XB 85.6 90.1 81.5 85.5
  AAA 47.9 6.3 18.4 1.6
Bone Acuros XB 99.9 99.8 100.0 100.0
  AAA 62.2 41.8 100.0 100.0
Dose to water     
NormalLung Acuros XB 99.8 99.2 100.0 99.3
  AAA 97.1 95.8 98.0 48.2
LightLung Acuros XB 83.5 90.5 83.8 90.0
  AAA 34.8 6.1 12.2 1.6
Bone Acuros XB 89.0 75.8 90.5 72.7
  AAA 79.8 97.4 18.3 12.6
Dose rescaled to water     
NormalLung Acuros XB 99.9 98.7 99.9 99.3
  AAA 99.5 93.3 97.6 51.8
LightLung Acuros XB 81.0 88.6 78.6 85.6
  AAA 29.9 6.0 7.8 1.6
Bone Acuros XB 99.9 99.8 99.9 99.9
  AAA 100.0 100.0 100.0 100.0
  1. 3%, 3 mm thresholds in the area of the insert included in the beam in the plane parallel to the beam central axis passing through the isocentre. Benchmark dose: VMC++, test dose: AAA or Acuros XB version 10.
  2. LF = large field, SF = small field