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