Users Manual Part 6
Clinical User’s Guide
IBA | 50-1 |
Volume 1 - Treatment Session
Chapter 50
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Monitoring an Irradiation
If the beam is slightly out of specifications, a warning is displayed to the RTT in the
TCR but the warning does not interrupt the beam. If the beam is severely out of
specifications, the irradiation is interrupted.
Monitor the irradiation by:
Listening carefully to the regular signals. The beep frequency is determined by
the dose delivery. If an irregular beep is heard, there may be a problem.
Watching the timer and the two Monitor Unit (MU) counters.
Note: System behavior is also monitored by the Accelerator Operator who may also
pause or resume the beam, for instance by inserting or removing beam stops.
If you are using a gating system, follow the procedure described in Section
“Triggering Procedure” on page 48-16.
WARNING Press the hardware emergency stop button if the irradiation fails to halt
when the software PAUSE or STOP button is clicked or when the
hardware PAUSE button is pressed.
WARNING Emergency stop buttons shut off energy to most components in the
Proton Therapy System (PTS). However, the electrical power to some
components will not be interrupted, so be aware that electrical hazards
and faults (faulty parts made live or induced fire) may still be present.