Users Manual Part 6

IBA | 48-16 | Clinical User’s Guide
Volume 1 - Treatment Session
|Part XI - Patient Positioning and Alignment Using the Universal Beam Triggering Interface |
Note: Optimization of the irradiation time is more complex when using gating. As
a consequence, irradiation time will be longer when gating is prescribed than when
gating is not prescribed.
Triggering Procedure
When selecting the setup beam:
1. Verify which gating system is required for the patient irradiation (i.e. which
source to select) in the patient file/OIS.
2. Make sure that the desired gating system is in the proper operational state.
3. On the UTEU:
a. Verify that the UTEU Power LED is On.
b. Rotate the source selector switch to the required gating system source.
Important Any attempt to change your selection of gating source after securing
the treatment room will be inhibited by the Therapy Safety System
(TSS). Therefore, you will need to unsearch the treatment room,
change the source selection so it matches the prescription, then re-
secure the room to start irradiation.
WARNING As a Radiation Therapy Technologist (RTT), check before allowing the
irradiation that the position of the selector switch of the external beam
triggering interface is consistent with the prescription data in the
patient file.
There is a risk of mistreatment as the system does not automatically
detect the gating prescription thereby always generating a continuous
irradiation.