46
OPERATOR'S MANUAL
EN
The Frankfurt plane is represented by an imaginary line running from the upper edge of the auditory meatus to the
lower edge of the orbit.
Sagittal vertical trace (2)
it ensures the symmetry of the patient head with respect to the sagittal midline. While observing this trace, it is
necessary to make sure that the patient looks straight ahead to prevent him/her from tilting the head to one side or
from rotating it slightly.
Vertical focusing trace (3)
it indicates the exact position of the focal point; to obtain a good focusing in PAN and DENT examinations, make this
trace coincide with the cusp of the upper canine. This trace is used also to point at the exact position of the condylar
head for TMJ examinations.
Lower horizontal trace (4)
it has the double function of tracing the lower limit of the field of view during CBCT examinations or is used to ensure
that the patient’s Frankfurt plane is
horizontal in tele-X-ray examinations (CEPH).
Light traces appear when the CONFIRMATION button is pressed for the first time and the X-ray device has moved to
the patient access position. After 30 seconds of inactivity, the traces disappear; to make them reappear, just press
one of the buttons
and do not press the CONFIRMATION button, or, if necessary, use the suitable switch
in the patient positioning screen.
Each pressure of the CONFIRMATION button will move all the device mobile parts. Make sure NOT to
press the button during the patient positioning and that the device can be safely moved.
5.4.2. PATIENT POSITIONING DESCRIPTION (CRANIOSTAT)
Craniostat’s components:
1
–
Base
2
–
Rods
3
–
Chin-rest
4
–
Bite
5
–
Bite locking lever
6
–
Cross member
7
–
Front support
8
–
Arms
9
–
Anatomical arches
10
–
Arm locking levers
11
–
Under-nose support (standard or reduced)
The craniostat consists of a lower and an upper part connected by two carbon
rods (2).
The lower part consists of a base (1) which is inserted into the chin-rest seat
by means of metal pins and can be removed by simply lifting it.
