Multiple Choice
Where are the petrous ridges seen on an image of a parietoacanthial (Waters method) projection of the paranasal sinuses?
A) In the middle of the maxillary sinuses
B) Superior to the maxillary sinuses
C) Inferior to the floor of the maxillary sinuses
D) In the lower two thirds of the maxillary sinuses
Correct Answer:

Verified
Correct Answer:
Verified
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