Question

Water's view is used to obtain diagnostic information of:

• A. Maxillary sinus
• B. Ethmoidal sinuses
• C. Frontal sinus
• D. Sphenoid sinus

Hint:

Occipitomental 45 degree view that clears the petrous bones off the antra.

Answer 1

The Correct Option is A

Step 1: Match each named skull view to the sinus it displays best. The occipitomental (Waters') projection tilts the head so the chin and nose touch the cassette, throwing the petrous bones downward.
Step 2: Because the petrous ridges no longer overlie the antra, the maxillary sinuses become fully visible, which is exactly why this view is ordered to look for fluid levels in acute maxillary sinusitis.
Step 3: Contrast this with Caldwell's view, which is tuned for the frontal and ethmoid air cells, and with the lateral/basal views used for the sphenoid sinus. None of those is Waters'.
Step 4: Hence Waters' view = maxillary sinus.
\[\boxed{\text{Maxillary sinus}}\]