Which portion of the orbit is best visualized with a PA projection?
entire orbital base
superior orbital margin
inferior orbital margin
lateral orbital margin
superior orbital margin
Rationale: The SOM is the portion of the orbit closest to the image receptor and therefore will have the least amount of magnification and greatest detail. In addition, with a PA projection, the petrous pyramids will fill the orbits, therefore only the SOM is clearly seen.
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Fill in the blank(s) with correct word