9 Technical data
120 Gendex Dental Systems
207723 rev 7
9.7 Scatter radiation measurement
The scatter radiation was measured around the
anthropomorphic skull phantom with the test instrument.
Measurements were performed with both adult panoramic
program and cephalometric, full lateral program. The
height of the test instrument was altered to define the
maximum scatter radiation direction.
The measurements in panoramic program were performed
in panoramic-PIO position with the movement of the
rotating unit. Exposure values were 90kV, 13mA and 16
sec. Reference measurement was measured first just in
front of the skull to define the radiation level which is hitting
the skull.
The measurements in cone beam programs were
performed in CT-PIO position with the movement of
rotation unit using hi-resolution option (maximum exposure
time). Exposure values were 90kV, 13mA and 6.1 sec with
small FOV and 90kV, 10mA and 13 sec with large FOV.
The measurements in cephalometric program were
performed in ceph-PIO position with the movement of the
ceph head. Exposure values were 90kV, 13mA and 10 sec.
Reference measurement was measured first just in front of
the skull to define the radiation hitting the skull.
The image shows the set-up of the tests and the arrows
indicate the radiation direction.
Approved: Laihonen Tuuli 2016-12-02 16:41
Reviewed: Nieminen Timo Antero 2016-12-02 15:31
Approved
See PDM system to determine the status of this document. Printed out: 2017-03-22 10:54:38
D507729, 7
Copyright © 2016 by PaloDEx Group Oy. All rights reserved.
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