SERVICE MANUAL
Checkout and adjustment
RTG PLUS (120V) (Rev. 0)
7-22
7.5.4
7.5.47.5.4
7.5.4
Adjustment of patient's auricular aperture cent
Adjustment of patient's auricular aperture centAdjustment of patient's auricular aperture cent
Adjustment of patient's auricular aperture centering rings
ering rings ering rings
ering rings
in latero
in lateroin latero
in latero-
--
-lateral cephalometric teleradiography
lateral cephalometric teleradiographylateral cephalometric teleradiography
lateral cephalometric teleradiography
Position the skull clamp in position lateral-lateral (asymmetric) and the
rods of the skull clamp at maximum width.
Making an exposure at 60kV - 0,80 sec., check perfect concentricity of
the rings used to center the ear hole. The centering rings are displayed
on the film as two cricles of different diameter, where the small one is
the one closer to the film and the large one is the one far from the film.
The two rings may not be aligned both vertically and horizontally.