Standard Imaging QA BEAMCHECKER PLUS User Manual

QA BEAMCHECKER™ PLUS 56
3. If required, connect the serial cable to the QA BeamChecker Plus to facilitate any
Communication Software-based operations. Wire-Free mode measurements are
recommended for gantry use to help avoid any incidents that could occur due to cable
motion during gantry rotation.
NOTE: It is recommended to avoid attaching the serial cable via the connector shell screws to
the unit and instead relying on the inherent pressure fit of the connection. If the cable catches
on an obstruction during gantry rotation, damage can occur if the connector cannot pull free.
4. Perform any desired measurements.
5. Remove the QA BeamChecker Plus from the Gantry Mount Accessory by
pulling the spring-loaded locking pin as shown in the image. While pulling
on the locking pin, gently slide the QA BeamChecker Plus from the mount.
The pin only needs to be held briefly to release the QA BeamChecker Plus
from engagement.
11.3 Precision TomoTherapy Leveling Platform
Use of the Precision TomoTherapy Leveling Platform (REF 70505) is not necessary for all
TomoTherapy system tests, however it is required for testing the laser positioning used with
the Hi·Art, H-Series or Radixact Systems. The laser test facilitated by the QA BeamChecker Plus
and accompanying leveling platform meets the requirements of D6 as recommended in the
following paper:
J D Fenwick et al, “Quality assurance of a helical tomotherapy machine”, Phys. Med Biol. 49
(2004)
D1: Output constancy quick check (+/- 2%)
D2: TPR 20/5 quick check (+/-2%)
D3: Lateral profile constancy quick check (+/-2%)
D4: Output ramp-up time (<10s)
D5: Combined dosimetric check (+/-2%)
D6: Lasers (+/-1 mm)

Standard Imaging QA BEAMCHECKER PLUS Specifications

General

Brand	Standard Imaging
Model	QA BEAMCHECKER PLUS
Category	Measuring Instruments
Language	English