The paranasal sinuses should always be examined in the upright position to: 1. demonstrate the presence or absence of fluid.2. differentiate between fluid and other pathologic conditions.3. make it easier for the radiographer to position the patient.

All of these projections will demonstrate ethmoidal sinuses, except:

Where is the image receptor centered for the parietoacanthial projection (Waters method) projection of the sinuses?

The opening underneath the alveolar portion of the mandible for the passage of blood vessels and nerve is called _________.

The nasal bones articulate on each of their lateral borders with _________.

What projection (method) of the paranasal sinuses, is demonstrated in the image below ? PA Waters image.jpg

What should be perpendicular to the IR on a lateral facial bone radiograph?

Letter A in the diagram below of the orbit labels the: orbit(3).jpg

The ethmoid sinuses are made up of air cells, which are divided into _________ groups.

Which of the following is true regarding the lateral projection of the nasal bones? MSP is parallel with the tabletop both sides are done for comparison the interpupillary line is perpendicular to the tabletop