L0_2016_Athens_Physics_Programme_V6

816-817 / 3107

cran
1
6
2 8
7 4
3
9
5
11
10
patient 1
- set-up error in a fraction =
systematic error + random error
- patient’s systematic error = mean error
- unique for a patient
Systematic and random errors
caud
left right
mean
set-up errors
- for each patient: systematic error is
a fixed error, occuring every day
- random errors are day-to-day variations
around the systematic error
- random error varies from day to
day
patient set-up errors 2D:
each fraction: 