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19 Cards in this Set

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Skull routine
*lateral
*PA Axial (Caldwell Method)
*AP Axial (Towne Method)
Film size for skulls
10*12
On a lateral skull, the ____ plane is parallel to the plane of the IR.
midsagittal
Baseline for lateral skull.
IOML
CR for lateral skull.
Perpendicular to enter 2 inches superior to the EAM
Baseline for Caldwell.
OML
On Caldwell, CR is tilted ___ deg and should exit the ___.
15, nasion
Criteria for Caldwell
petrous ridges in lower third of orbit with the 15 deg tilt
Baseline for Towne.
OML or IOML
For Towne, CR is directed through the _____ at ___ or ___ deg.
*foramen magnum
*30, 37
Criteria for Towne method
*symmetric petrous ridges
*dorsum sellae in the foramen magnum
Film size for facials
8*10
On a lateral facial, ____ line is per. to the IR.
interpupillary
Baseline used on lateral facial.
IOML
CR for lateral facial.
per. entering the zygomatic between the outer canthus and EAM
Baseline used for Waters.
OML
On a Waters, ___extend the neck so that the OML makes a ___ angle with the IR.
hyper, 37
On a Waters, the ____ line with be per. to the IR
mentomeatal
Structures shown on a Waters
orbits, maxillae, and zyg arches