KaVo ORTHOPANTOMOGRAPH OP 3D User And Installation Manual page 74

7 Maintenance
5. Protect yourself from radiation.
6. Press and hold the exposure button down to take the QC image.
7. The QC image preview appears on the GUI.
8. Acknowledge the preview by pressing the OK button on the GUI.
9. Workstation: Visually evaluate the image using the dental imaging software:
A: Smoothness of the exposed area.
B: Non-exposed area surrounds the whole image.
C: High contrast resolution; the distinguishable line pair resolution should be:
• 3.1 LP/mm or better when using 0.8mm Copper filter
• 2.5 LP/mm or better when using 1.8mm Copper filter
D: Low contrast holes must be visible:
• 4 holes when using 0.8mm Copper filter
• 2 holes when using 1.8mm Copper filter
NOTICE! You should also compare the new QC image to the reference image
taken during the installation or the latest service. Doing this helps you ensure that
the image quality has remained constant.
NOTICE! The line pair resolution depends also on the other factors than the
device itself, for example the imaging Software configurations. According to the
standards, the distinguishable line pair resolution must be 2.5 LP/mm or better.
10. If the image fails on any of the previously listed criteria, redo the QC program. If it
fails again, recalibrate the device according to
contact service.
11. Detach the PAN QC phantom holder and 2D QC test phantom from the device.
12. Detach the copper filter from the PAN/3D tubehead.
74
Reviewed Suuronen Esa 2019-09-19 12:21
Approved Lassinen Juuso 2019-10-02 14:37
Calibration procedure on page 69 or
ORTHOPANTOMOGRAPH
™
OP 3D
D519207, 19