Dose Course 2018_Flipping book

Performance testing – ex. Accuracy of configuration data- volume averaging

2%-2mm

3%-3mm

Gamma analysis (2%-2mm; 3%-3mm)

Three beam models (profiles)

The use of the appropiate detector has a direct impact in the results of gamma evaluation; agreement between planning and delivery

• 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