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Star dose measurements – machine variability
12 Siemens Primus 10 MV
Red lines are individual star scans (21 per machine, 10° intervals)
+1 sd+
Median
-1 sd-
2
4
6
8
10
12
14
Off axisdistance cm
99
100
101
102
103
104
105
106
ler
.
e
s
o
D
Measurementvariations, Starscansfor 12 of SiemensPrimus10MV