MOSAIQ User's Guide - UCSF Radiation Oncology

MOSAIQ User’s Guide
SEQUENCER
Intended Use
The intended use of SEQUENCER (generically referred to as a verification system) is to assist
in the process of patient treatment on a radiotherapy treatment machine. SEQUENCER
provides the capability to notify the users of actions that need to take place prior to
treatment, to display reference images for se up purposes, and to auto setup the machine to
predefined settings. The actual settings are read from the treatment machine, via the
machine’s communication interface, and compared to the predefined values. If a mismatch
occurs between the planned values and the actual machine settings, treatment is prohibited.
At appropriate points during the treatment, the actual delivered values are recorded to
provide treatment tracking.
Treatments are initiated by the operator, via the machine control system, only after the user
has verified that the treatment setup is correct. SEQUENCER does not bypass any checks put
in place by the machine’s control system.
The intended benefit of a computer based verification system is to eliminate the errors which
occur in treatment setup when the only means of verification is the user’s manual comparison
of the handwritten chart against the machine settings and to record actual treatment
parameters, directly from the machine, again eliminating the errors which occur from manual
recording and calculation. Thus, a verification system is an adjunct to the normal treatment
regimen intended to enhance total treatment quality.
Indications for Use
SEQUENCER is to be used to facilitate the delivery of defined radiotherapy treatment plans.
SEQUENCER verifies the settings on a radiotherapy treatment machine prior to treatment
and records the actual parameters after treatment. SEQUENCER can be used whenever
radiotherapy treatment is prescribed.
292 Copyright 2010, Elekta Impac Software
LUGMSQ0002/4.0/23-Sep-2010