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Gamma analysis (2%-2mm; 3%-3mm)
Three beam models (profiles)
•
6mm diameter ion chamber (BM6)
•
4mm diameter ion chamber (BM4)
•
True profiles (analytic fitting/deconvolution)(BM08)
Guanghya Yan et al. Med Phys 35(8) 2008
3%-3mm
2%-2mm
The use of the appropiate
detector has a direct impact in
the results of gamma
evaluation; agreement
between planning and delivery
Performance testing – ex. Accuracy of configuration data-
volume averaging