Monthly Flashcards
1
Q
Secondary access interlocks
A
Functional
2
Q
Emergency off switches
A
Functional
3
Q
Movement interlocks (full check)
A
Functional
4
Q
Backup timer interlock (where set by user)
A
Functional
5
Q
Pointers (if used)
A
2 mm
6
Q
Gantry and collimator rotation scales
A
+/- 0.5 degrees
7
Q
Optical field size variation for different field sizes
A
2 mm
8
Q
Isocentre quick check
A
2 mm diameter
9
Q
Distance indication at different SSDs
A
2 mm
10
Q
Couch movement calibration
A
2 mm relative
11
Q
Couch vertical movement
A
2 mm
12
Q
6DoF couch
A
2 mm/ 1 degree
13
Q
Output calibration check
A
+/- 2%
14
Q
Flatness and symmetry
A
+/- 2%
15
Q
Energy check using dose ratio at gantry 0 degrees
A
Ratio +/- 1%
