POSTEROANTERIOA PROJECTION (CALDWELL METHOD)
5-5.
a. Sinus Routine. The routine views are the PA projection (Caldwell method),
parietoacanthial projection (Waters), and lateral sinuses.
b. The Sinuses. The four sinuses are the frontal sinus, the ethmoid sinus, the
sphenoid sinus, and the maxillary sinus.
c. Best Demonstrated. The PA projection (Caldwell method) best
demonstrates the frontal and ethmoid sinuses. The Waters best demonstrates the
maxillary sinuses. The lateral projection best demonstrates all four sinuses.
MD0962
5-16