Question

Best view for sphenoid sinus is -

• A. Water's view
• B. Caldwell view
• C. Basal view
• D. Towne's view

Hint:

Submentovertical projection reaches the deep skull-base sinus.

Answer 1

The Correct Option is C

Step 1: Each paranasal sinus is best demonstrated by a specific radiographic projection that throws the sinus clear of overlapping bony structures.

Step 2: The sphenoid sinus lies deep at the skull base. The basal view, also called the submentovertical view, projects the X-ray beam from below the chin to the vertex and shows the sphenoid sinus best.

Step 3: The distractors map to other sinuses: Water's view (occipito-mental) is best for the maxillary sinus, Caldwell view (occipito-frontal) is best for the frontal and ethmoid sinuses, and Towne's view is used for the occiput and condyles, not the sphenoid.

Step 4: Therefore the basal (submentovertical) view is the correct answer for the sphenoid sinus.