415 / 1138
Effective Standard Deviation of the Errors
Effective Systematic Error
Effective Random Error
2
2
1
s
N
effective
S= S
Error in estimating the average
2
1
1
s
s
- =
N
effective
de Boer H C and Heijmen B J 2001 A protocol for the reduction of
systematic patient setup errors with minimal portal
imaging workload Int. J. Radiat. Oncol. Biol. Phys.
50 1350–65