Orbits
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The optic nerve and opthalmic artery enter the orbit through the: | optic foramen
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| Routine projections of the orbits include what? | Waters, Caldwell, Lateral
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| How many degrees is the head rotated for the parieto-orbital oblique (Rhese) projection of the optic canal? | 53 degrees
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| Which line is placed perpendicular to the IR for the parieto-orbital oblique (Rhese) projection of the optic canal? | acanthiomeatal line
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| 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
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| 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)
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| 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
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| What bone is not part of the orbit? | parietal
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| The CR is positioned where on the parieto-orbital oblique projection? | 1 inch superior to the TEA
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| To correct for longitudinal deviation in the parieto-orbital oblique projection you would nedd to adjust what baseline? | AML
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Ruesrowan
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