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Table 7 - Correlations between the gamma passing rates and the modulation complexity score

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)
 3%/3 mm 0.193 0.023 0.448 < 0.001 – – 0.340 < 0.001
 2%/2 mm 0.268 0.001 0.392 < 0.001 – – 0.378 < 0.001
 2%/1 mm 0.433 < 0.001 0.352 < 0.001 – – 0.529 < 0.001
 1%/2 mm 0.311 < 0.001 0.238 0.005 – – 0.282 0.001
 1%/1 mm 0.482 < 0.001 0.268 0.001 – – 0.453 < 0.001
TrueBeam STx
 3%/3 mm – – – – −0.243 0.015 – –
 2%/1 mm – – – – − 0.196 0.050 – –
  1. Note: Only r values with p ≤ 0.05 are shown
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Radiation Oncology

ISSN: 1748-717X

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