Cephalo Exposures
(7) PA (posteroanterior) Exposure
1. Press the PA key.
2. Turn the Dens Comp key on to select both the required soft
and hard tissues for making cephalo measurements.
(Dens Comp: automatic density compensation)
(Soft tissues will not be selected if the Dens Comp key is
turned off.)
* When the Dens Comp key is turned on, the arm operation
panel will display “90 kV.”
* Cephalo exposures cannot be made with Auto Exposure.
Patient Positioning
Turn the craniostat into the PA exposure position.
* Otherwise, positioning, X-ray emission, patient egress are all
the same as for the LA exposure.
However, the nasion plate should be raised up.