Cranium: Nasal, Sinus Etc. Flashcards
Where is the CR entering on a lateral of the facial bones?
Lateral surface of zygomatic bones, halfway between the outer canthus and EAM
For a lateral of the facial bones the exposure field should be no larger than
6x10in
For a waters projection of the facial bones, the OML’s should form a ____ degree angle with the plane of the IR.
37
For a water of the facial bones the CR is
Perpendicular, exiting the acanthion
The exposure field for the waters of the facial bones should be no larger than
8x10in
What structures are shown in the Waters of the facial bones
Orbits, maxillae, and zygomatic arches
For waters of the facial bones the IR is centered
At the level of the acanthion
For PA Caldwell of the facial bones, the CR exits the _____ at an angle of _____
Nasion
15 degrees caudad
For the lateral of the Nasal bone, the field of view should be no larger than
3x3 in
What structures are shown on a lateral view of the Nasal bone?
Nasal bone and soft tissue of the nose closer to the IR
For a lateral view of the sinuses the CR enters
1/2 to 1 inch posterior to the outer canthus
For a PA axial Caldwell view of the sinuses the grid device should be
Tilted down 15 degrees
Angling the grid for the PA axial Caldwell is preferred because
It brings the IR closer to the sinuses
For the waters method of the sinuses the OML should form a _____ degree angle from the IR
37
Where does the CR exit on a waters method of the sinuses?
Acanthion
The open mouth waters of the sinuses demonstrates
The sphenoidal sinuses
For sinuses it’s important for the patient to be ____ whenever possible
Upright
The ______ form the superior bony wall of the nasal cavity
Nasal bones