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Results of relative output factor (ROF) measurements with EBT film dosimetry and their comparison with Monte Carlo (MC) calculations done by ELEKTA INSTRUMENT AB, Stockholm, Sweden for LGK PFX. Deviations between measured and calculated values are given in parenthesis. Relative output factor for 16 mm collimator size is by definition 1.000
| Collimator size | MC calculated ROF | Measured ROF by EBT film dosimetry |
|---|---|---|
| 8 mm | 0.924 | 0.917 ± 0.014 (−0.8%) |
| 4 mm | 0.805 | 0.810 ± 0.007 (+0.6%) |
