KaVo ORTHOPANTOMOGRAPH OP 3D Pro, Installation Manual

Page: 101 / 168

7 Cephalometric calibration and alignment
93
7 Cephalometric calibration and
alignment
7.1 Preparations
NOTICE! The nasion support and the ear holders must be
turned out of the way for cephalostat calibrations, so they
are not in front of the x-ray beam.
NOTICE! Check the orientation of the nasion support and
the ear holders so that the patient is always facing to the x-
ray room.
Install the cephalostat unit and make sure that it is in
balance using spirit levels.
NOTICE! Before calibrating the cephalostat update the unit
firmware. See Firmware update instructions.
Take an exposure.
7.2 Cephalometric calibration sequence
1. Balance the cephalostat.
2. Do the primary collimator horizontal adjustment (auto-
matic). Adjust the rotator angle to have the x-ray beam di-
rected exactly towards the cephalometric sensor.
3. Do the rotation angle adjustment (automatic). Adjust the
rotator angle to have the x-ray beam directed exactly to-
wards the cephalometric sensor.
4. Do the mechanical collimator adjustments and check the
cephalostat fixation angle (manual, software guided),
which you can adjust if necessary.
5. Do the secondary collimator horizontal adjustment (auto-
matic). Fine tune the position of the secondary collimator
for optimal alignment with the sensor and X-ray source.
6. Do the cephalostat laser adjustment.
7. Do the cephalometric pixel calibration. Capture sensor
calibration data for performing image corrections.
8. Check the cephalometric quality (optional). Verify that
the image quality is appropriate.
9. Align the ear holders.