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The Centralite CT moving laser systems are designed to make patient
marking as accurate and efficient as possible, no matter what the CT
simulation procedures to be followed are, or what CT simulator or treatment
planning system it will be used with.
Operator Convenience
Making the system convenient and efficient to use for both the therapist and
the patient is a top priority of the Centralite system.
- Providing complete laser status and position information and system
control to the therapist through the hand held terminal allows the therapist to remain in the CT room, working with the patient, for all patient alignment and marking procedures.
- Elimination of a separate PC for moving laser control keeps the CT
control area uncluttered and reduces the need for the therapist to
move back and forth from the control area to the patient.
Universal Connectivity
Making the moving laser system work with any CT simulator and any
treatment planning system, allows the user to configure a system the way
that works best for him.
- With the “PC” option, the Centralite
moving laser system can interface to
any treatment planning system or CT
simulator that has a laser offset file
output capability.
- Flexible functions allow the moving laser system to implement any feature offered by the
treatment planning system. These include the ability to quickly set a new temporary zero position, to mark a variety of setup points as well as field outlines on the patient’s skin,
to control individual laser lights on and off, and so on.
- The moving laser controller can control 1, 3, 4, or 5 moving laser actuators, to accommo-date any arrangement of moving lasers.
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- Maximum Accuracy
Accuracy of patient marking is one of the key objectives of a moving laser system.
- Each moving laser actuator executes
a self-calibration cycle each time it is powered up,
providing a precisely accurate reference point from which all movement is made.
- The factory calibration procedure accounts for position of the laser line at
isocenter (as opposed to at the laser origin) to provide the most accurate line positioning
possible.
Ease of Installation and Alignment
Initial installation alignment and subsequent line alignment to isocenter are made as easy and
straightforward as possible.
- For proper alignment of laser lines during initial installation, to achieve “wall-to-wall”
alignment of opposing lasers requires that the origin of each laser be located correctly
in the reference plane. The fixed lasers mounted in the end of the Centralite moving laser
actuators are mounted on a slide whose position is controlled by a thumbwheel. This
allows the fixed laser to be moved to the correct plane without moving the actuator
mounting itself.
- Once laser origins are correct, rotational alignment of the laser line is accomplished by
the turn of a knob, again, independent of the base mounting orientation. Laser lines are
adjusted individually, allowing lines to be made perfectly orthogonal.
- Laser line tilt adjustment is accomp-lished by means of buttons on the outside of the
moving laser actuator. Thus alignment is quickly set at initial installation, or easily adjusted subsequently if necessary.
- The “zero” position can be set from the handheld terminal to accommo-date any
installation configuration. Similarly, actuator orientation (direction of travel considered
positive) can also be set from the handheld terminal.
- A temporary zero reference position independent of the installation zero position can be
quickly set for any axis at any point in time.
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