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15

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

“As expected”

Large detectors?

Outliers

Siemens Primus 18MV

0.000

0.050

0.100

0.150

0.200

0.250

0.300

0.350

0.400

0.450

0.500

0.000

0.200

0.400

0.600

CP

[cm]

GT

[cm]

Siemens Oncor 6MV

0.000

0.200

0.400

0.600

CP

[cm]

0.000

0.050

0.100

0.150

0.200

0.250

0.300

0.350

0.400

0.450

0.500

GT

[cm]