click below
click below
Normal Size Small Size show me how
Orbits
| Question | Answer |
|---|---|
| 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 |