17” Floor Box Horizontal Position
The following image shows a top view of the 17” floor box position relative to the isocenter:
45°
1170
+12mm
Isocenter
Ideal
recess position
17" Floor Box
Linac Baseframe
max. 25mm
Worst case
recess position
17" Floor Box
Figure 52
Worst case scenario:
Due to an incorrect recess set up, the floor box has to be rotated within the recess into a correct
position, which can be very limited. The maximal deviation of the line “floor box tip – midpoint rear
wall of box” at the isocenter is 25 mm. The only (and determining) measurement is the exact
distance between the isocenter and the floor box tip at 45°.
APPENDIX
Site Planning Manual Rev
. 1.0 ExacTrac Ver. 6.x 119
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