Users Manual Part 6

Clinical User’s Guide IBA | 46-3|
Volume 1 - Treatment Session
|Part XI - Patient Positioning and Alignment Introducing Patient Positioning and Alignment |
Setup Position
The Setup position is the position where the center of the treatment site coincides
with the isocenter of the system. The setup position is specific to the setup beam.
Note: If this is the first beam of the patient’s plan to be delivered, you must move
the patient to the baseline Setup position. For all successive beams, the Setup
position will be the last saved Setup position.
The Setup position is a labeled position; you must perform an Auto motion to bring
the patient positioning devices to this Setup position.
Figure 46-1. Setup Position (GTR, lateral view)
TTCS refers to the Table Top Coordinate System. FRS refers to the Fixed Reference
System.
For a further explanation regarding TTCS and FRS, refer to section “About Coordinate
Systems”in PTS System Description.
rotational axis
of the couch
isocenter axis gantry axis
gantry axis
Zttcs
Yttcs
Yfrs
Zfrs
TTCS
isocenter,
FRS 0,0,0