Users Manual Part 3

IBA | 28-6 | Clinical User’s Guide
Volume 1 - Treatment Session
|Part IV - Using ada PT prescribe Managing Plans |
4. If the plan contains more than one isocenter, the system will trigger a
consistency check between the isocenters positions and the PPS positions. If
there are inconsistencies (i.e. for at least one pair of isocenters, distance
between PPS positions is different than distance between isocenters), the
system displays a detailed message featuring the pair(s) of positions of the PPS
and the isocenters that are inconsistent, for the user to decide whether to
continue with the workflow or not.
Two scenarios are possible:
a. The system cannot perform the consistency check on a multiple isocenter
plan because some beams contain pitch and roll PPS positions. A pop-up
message prompts you for continuation.
Figure 28-5. Consistency Check Pitch/Roll PPS Positions
Pop-Up Message
Click OK if you want to proceed with your selection, else click Cancel.
b. There is a system message in case of failure of the check between inter-
isocenter and inter-PPS positions, with an interface for override with
credentials by an authorized user if the user decides to continue with the
workflow.
WARNING If pitch and roll positions are defined for all or some of the beams in a
multiple isocenters plan, the system will not perform the consistency
check of the Patient Positioning System (PPS) positions with respect to
the different isocenters.
As a user, it is your responsibility to check that the PPS positions in the
plan are correct ant to decide whether to continue with the workflow or
not under these circumstances.