Operating Instructions
24
7.4. POSITIONING THE PATIENT - Part 2
Switch on the light beam localizers. Laser stays ON for 5 minutes; when
carriage reaches START Exams the lights are switched OFF automatically.
ATTENTION:
The light beams are LASER lights. Avoid unnecessary exposure of the eyes of
the patient or of the operator to the laser radiation and pay attention that the
laser beams are not intercepted by any optical device.
The Mid-sagittal laser beam should fall in the mid-sagittal plane of the patient.
Stand behind the patient and check in the mirror if the vertical mid-sagittal
laser beam (red line in the side image) is aligned with the patients mid-sagittal
plane. Adjust the position by moving patients’ head, if needed.
The FH (Frankfurt Horizontal) beam should be falling between the upper edge
of the external auditory meatus and the lower edge of the infra-orbital rim.
x
The height of the FH horizontal beam can be adjusted with a dedicated
knob (7) on the right side of the tubehead.
x
Adjust the height of the unit to have the Frankfurt plane Horizontal (FH)
and the cervical vertebrae straight (not bent forward) and stretched.
In the images below the Frankfurt plane on the patient is represented by a
green line, the laser beam for Frankfurt plane alignment (emitted by
equipment) is represented by a red line.
x
Fine tune the head inclination for the FH setting by briefly touching the UP
or DOWN height adjustment key.
x
Verify side rotation of the head with reference to the Midsagittal light using
the mirror from the back of the patient and correct in case.
x
Ask the patient to swallow and keep the tongue lightly pressed to the
palate.
x
Eventually recommend to avoid movements till the end of the exposure
Correct position:
Frankfurt plane is horizontal.
