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Orbits

QuestionAnswer
The optic nerve and opthalmic artery enter the orbit through the: optic foramen
Routine projections of the orbits include what? Waters, Caldwell, Lateral
How many degrees is the head rotated for the parieto-orbital oblique (Rhese) projection of the optic canal? 53 degrees
Which line is placed perpendicular to the IR for the parieto-orbital oblique (Rhese) projection of the optic canal? acanthiomeatal line
The optic foramen should be seen where in the orbit of a properly positioned parieto-orbital oblique (Rhese) projection? lower and outer portion of the orbit
How would you correct positioning in the parieto-orbital oblique (Rhese)projection if the optic foramen is visualized medially in the orbit? rotate the head laterally (toward the affected orbit)
To correct for positioning errors when the optic foramen is visualized in the superior portion of the orbit in a parieto-orbital oblique (Rhese) projection you would: extend the chin
What bone is not part of the orbit? parietal
The CR is positioned where on the parieto-orbital oblique projection? 1 inch superior to the TEA
To correct for longitudinal deviation in the parieto-orbital oblique projection you would nedd to adjust what baseline? AML
Created by: Ruesrowan on 2008-12-07



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