Users Manual Part 5

Clinical User’s Guide
IBA | 38-3|
Volume 1 - Treatment Session
|Part VI
- Using adaPT
deliver
in Standalone Mode Pausing and Stopping an Irradiation
|
Whether you are using the Universal Beam Triggering Interface (UBTI) in manual
mode or in automatic mode, you are always capable of pausing the irradiation
following the procedure described in Section “Pausing Irradiation” on page 38-3.
Pausing Irradiation
A pause halts the beam and prevents it from entering the Treatment Room (TR). The
dose counters are still active.
If you need to pause the irradiation, from the Treatment Control Room (TCR), click
Pause from the T
REATMENT SCREEN.
WARNING As a Radiation Therapy Technologist (RTT), when the treatment is
interrupted (e.g., the treatment is stopped after a pause, the software
crashes, etc.), you have to manually record the value reported by the
hardware Monitor Unit (MU) counter, which is located on the front
panel of the Dose Counter Electronic Unit (DCEU).
If applicable, i.e., in the Single Scattering, Double Scattering, and
Uniform Scanning treatment modes ONLY, a correction shall manually
be applied to this value to take into account the dose correction
parameters encoded in the Dosimetry Manager (ambient temperature,
atmospheric pressure, and dose correction factor).
Check that the value reported by the hardware MU counter (after
correction) matches the delivered MU value recorded in the Oncology
Information System (OIS) for this irradiation.
When the irradiation is resumed, if the system (Oncology Information
System or Proton Therapy System) proposes a MU value for the
delivered dose (MUd), you shall verify that this value matches the value
reported by the hardware MU counter (after correction), within the
foreseen precision. If the values are not in agreement, you shall use the
value reported by the hardware MU counter (after correction).
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.