ESTRO course Dose Modelling and Verification 2017

Source size determination by fitting calculated dose profiles to measured profiles for 10x10 cm 2 fields.

Results from 59 clinical Siemens machines in Nucletrons customer database

0.000 0.050 0.100 0.150 0.200 0.250 0.300 0.350 0.400 0.450 0.500

0.000 0.050 0.100 0.150 0.200 0.250 0.300 0.350 0.400 0.450 0.500

Siemens Primus 18MV

Siemens Oncor 6MV

GT [cm]

GT [cm]

“As expected” Large detectors? Outliers

0.000

0.200

0.400

0.600

0.000

0.200

0.400

0.600

CP

[cm]

CP

[cm]

15