Mechanical Adjustment Program - KaVo ORTHOPANTOMOGRAPH OP 3D Pro Installation Manual

7.2.4

Mechanical adjustment program

Mechanical adjustments of primary and secondary
collimator, as well as adjustment of the cephalostat fixation
angle, are guided by a mechanical adjustment program.
This program gives an image with three exposed areas of
interest (marked with arrows in the figure).
Example of a Cephalostat Mechanical Adjustment image.
• The leftmost area is exposed with the cephalomet-
ric collimator having reduced height. This area is
used for adjusting the vertical position of the X-ray
beam (primary collimation vertical position).
• The area in the middle is exposed with the full
height cephalometric collimator. This area is used
for checking X-ray beam integrity, and shall be
equally exposed in the whole height of the image.
• The rightmost area is the beam after secondary
collimation. This area is used for checking second-
ary collimator vertical position and tilt. This area
being too far left or right in the image indicates that
the fixation angle of the cephalostat is incorrect
and that the cephalostat must be turned.
7 Cephalometric calibration and alignment
97