Quiz 3 Flashcards
Axial lateral law; CR & pt. Position
- AKA 15/15
- CR 15 degrees cuadad entering 1-1/2” superior to EAM
- pt. MSP rotated 15 degrees towards film & interpupillary line perpendicular
What bones have sinuses
- frontal
- ethmoid
- maxillary
- sphenoid
How old is one when their sinuses are fully develop?
•18 years old
Which sinus is the biggest?
•maxillary sinus
What sits on top of the sphenoid sinus?
•sella turcica
Why do sinuses in a upright position?
•to check air/fluid levels
Where should the Petrous bones be on a waters?
•below maxillary sinuses
Open mouth waters, what are we looking for
•sphenoid sinuse
Open mouth waters (parietoalcanthial)
CR, Pt.
- CR perpendicular exiting acanthion
* Pt. Chin resting on IR OML 37degrees to IR MSP perpendicular
Which position is primarily for the maxillary sinuses
•parietoacanthial (waters) closed mouth
What part of the head is resting on the IR During a waters?
•chin
What’s the difference between the sinus Caldwell & other Caldwells
- CR perpendicular
* PT. OML 15 degrees