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Table 2 - Correlations between the global and local gamma passing rates

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

Gamma criteria MapCHECK2 measurements ArcCHECK measurements
r p r p
Trilogy (C-series linac)
 3%/3 mm 0.218 0.010 0.540 < 0.001
 2%/2 mm 0.621 < 0.001 0.440 < 0.001
 2%/1 mm 0.642 < 0.001 0.339 < 0.001
 1%/2 mm 0.806 < 0.001 0.469 < 0.001
 1%/1 mm 0.770 < 0.001 0.325 < 0.001
TrueBeam STx (SABR + non-SABR)
 3%/3 mm 0.271 0.006
 2%/2 mm 0.451 < 0.001 0.202 0.043
 2%/1 mm 0.510 < 0.001 0.376 < 0.001
 1%/2 mm 0.860 < 0.001 0.391 < 0.001
 1%/1 mm 0.842 < 0.001 0.383 < 0.001
TrueBeam STx (SABR)
 3%/3 mm 0.409 0.001
 2%/2 mm 0.332 0.010 0.318 0.013
 2%/1 mm 0.531 < 0.001 0.519 < 0.001
 1%/2 mm 0.845 < 0.001 0.460 < 0.001
 1%/1 mm 0.851 < 0.001 0.480 < 0.001
TrueBeam STx (non-SABR)
 3%/3 mm
 2%/2 mm 0.434 0.005
 2%/1 mm 0.404 0.010 0.454 0.003
 1%/2 mm 0.826 < 0.001 0.453 0.003
 1%/1 mm 0.758 < 0.001 0.506 0.001
  1. Note: Only r values with p ≤ 0.05 are shown