Fig 1.
LINAC results obtained using Daily QA3 system viewed on Atlas QA graphic user interface.
Fig 2.
Atlas QA GUI showing locations and raw signals produced by ICs in Daily QA3 system.
Fig 3.
Overall concept for monitoring X-energy variation using Daily QA3 system.
Fig 4.
X-energy variation measured using Daily QA3 over the monitoring period ("cross point" indicates transition of the 6-MV energy trend).
Fig 5.
Variation of X-energy with energy level measured using Daily QA3 over the course of one day.
Fig 6.
Correlations between energy change and flatness for (a) 6 MV and (b) 10 MV beams.
Fig 7.
Changes in IC signals during repeated measurements performed in one day for (a) 6 MV and (b) 10 MV beams.
Fig 8.
IC signal variations over the entire monitoring period for (a) 6 MV and (b) 10 MV beams.
Table 1.
Summary of IC signal changes during repeated measurements from an uncertainty perspective.
Fig 9.
Uncertainties associated with monitored energy changes for (a) 6 MV and (b) 10 MV beams.
Table 2.
Comparison between changes in the energy measured using Daily QA3 system and water phantom PDD ratios.