Planmeca ProOne - Temporomandibular Joint (TMJ) Exposure; Procedure for Double TMJ Exposures (Lateral, PA, Lateral-PA)

11 TEMPOROMANDIBULAR JOINT EXPOSURE
48 Planmeca ProOne User’s Manual
11 TEMPOROMANDIBULAR JOINT EXPOSURE
11.1 Double TMJ exposure (lateral, PA or lateral-PA)
This procedure will produce open and closed views of the
left and right temporomandibular joints.
Note that this is a double exposure and the C-arm will
travel through two exposure cycles.
NOTE
You can set the X-ray unit so that the imaging position is
automatically moved forward for the open view in lateral
and PA double exposures. Refer to section 14.2.2
“Program presets (P2200)” on page 84 for more
information.
NOTE
For lateral-PA double exposures the imaging angle is
automatically changed between exposures.
Use the chin support for this exposure. Insert the chin
support into the adapter on the patient support table.
Ask the patient to remove any spectacles, hearing aids,
dentures, hairpins, and personal jewellery such as
earrings, necklaces and piercings as these can produce
shadows or reflections in the image. The patient should
also remove any loose items of clothing (e.g. scarf, tie)
that might get caught in the unit’s arm structures.
Place a protective lead apron over the patient’s back if
required.
11.1.1 First exposure - jaw closed
Select the double TMJ exposure program you require,
refer to section 9.3 “Selecting temporomandibular joint
(TMJ) exposure program” on page 20. Select the patient
size as described in section 9.7 “Selecting patient size” on
page 34.
Select the image position parameters (target position,
imaging angle, symmetric/asymmetric setting and left/
right side exposure) as described in section 9.3.1
“Selecting imaging position for temporomandibular joint
(TMJ) exposures” on page 23.
The exposure values will automatically change according
to the selected patient size. The preset exposure values
are shown in the following table. The preset exposure
values are average values and they are only meant to
guide the user. If needed, you can change the preset
values as described in section 9.8 “Selecting kilovolt and
milliampere values” on page 35.
Lip1.eps