Operating Instructions
22
7.2. PREPARING PATIENT BEFORE POSITIONING
Ask the patient to remove from head and neck all metallic items such as
removable denture, earrings, necklaces, glasses which might cause ghost
images on the radiograph.
x
Physical constitution, clothing, bandages, etc. must not interfere with the
movement of the arm.
x
If in doubt, perform a test rotation without radiation by having selected
before the TEST mode.
x
In case a protective apron is used leave the neck free not to interfere with
the X-ray beam: radiation enters from sides and from back.
x
Insert bite block or chin rest according need.
x
With the arm in “PATIENT ENTRY” position, have the patient stand in front
of the mirror, close to the unit.
x
Bring the unit the proper height using UP or DOWN keys.
NOTE
The height adjustment motor starts slowly and then increases its speed. Press
the height adjustment key until the unit has reached the desired height.
7.3. POSITIONING THE PATIENT
7.3.1. Panoramic and 3D Exams (from P1 to P8, except P6 and P7)
x
Bring the carriage to have the bite block or the chin rest slightly higher.
x
The patient must stay with lowered shoulders and advanced feet, close to
the column, to favor spine stretching at cervical level for a better beam
penetration, holding firmly the handles
With bite block, and chin rest with bite block
x
Have the patient bite into the indentation in the tip of the bite block.
Mouth is closed but teeth are not superimposed.
With chin rest and support for patient without anterior teeth
x
Make sure the upper and lower jaws are lined up with each other.
Use of a cotton roll to prevent superimposition of teeth.
With nasal support
x
Instruct the patient to place his subnasale (the base of his nose) against
the contact segment.
