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39

0

10

20

30

40

Inner collimator field size cm

0.95

1

1.05

1.1

riaFO ,

ssarb

dliub pu pac

Measurement variations for 19 of Varian Clinac 2100, 6 MV, 40xX cm2 fields

+1 sd+

Median

-1 sd-

Head scatter machine (man?) variability

Out r llimator field size X [cm]

.95

1

1.05

1.1

S

c

, r

li

r ent

i tions

i n li ac

,

,

X*40

2

i lds