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Table 9 - Correlations between the gamma passing rates and the differences in the V50% of patient body between the original plans and the reconstructed plans with log files

From: Reliability of the gamma index analysis as a verification method of volumetric modulated arc therapy plans

Gamma criteria MapCHECK2 measurements ArcCHECK measurements
Global gamma passing rates Local gamma passing rates Global gamma passing rates Local gamma passing rates
r p r p r p r p
Trilogy (C-series linac)
 2%/1 mm − 0.166 0.050
 1%/1 mm −0.187 0.027 −0.185 0.029
TrueBeam STx (SABR + non-SABR)
 3%/3 mm −0.293 0.003
 2%/2 mm −0.327 0.001
 2%/1 mm −0.253 0.011 −0.328 0.001
 1%/2 mm −0.332 0.001
 1%/1 mm −0.254 0.011 −0.326 0.001
TrueBeam STx (SABR)
 2%/1 mm −0.293 0.023
 1%/2 mm 0.264 0.042
TrueBeam STx (non-SABR)
 3%/3 mm −0.351 0.027
 2%/2 mm −0.351 0.027
 1%/2 mm −0.335 0.035
  1. Note: Only r values with p ≤ 0.05 are shown