Planmeca Proline EC ceph, Technical Manual

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Chapter E - DIMAX3 DIGITAL SYSTEM ADJUSTMENT
Planmeca Proline EC X-ray unit E-25
CALIBRATING PANORAMIC SENSOR HEAD
Technical Manual
Take an exposure. The images of 23 balls should appear on the image. They should be
round, all the same size, and evenly spaced.
Also the Results of the ball phantom test window appears. In this window the distances from
the center of the middle ball to the center of the tenth ball on the right and left side, and the
distance from the center of the middle ball to the center of the rear middle ball are given.
Figure 48
The outermost balls on the left and right sides should appear symmetrically. If the distance
from the center of the middle ball to the center of the tenth ball on the right side differs more
than 2mm from the corresponding distance on the left side, the rotation start limit must be
adjusted (in the same way as in the film-based panoramic X-ray, see section “Rotation limits”
on page D-22). Note, that the adjustment of the patient positioning mechanism must be per-
formed first.
The distance from the center of the middle ball to the center of the rear middle ball should be
less than 2mm. If the distance is not correct you will have to adjust the position of the patient
positioning mechanism (see section “Patient positioning mechanism adjustment” on page E-
30).