PA skull Flashcards
What line should be positioned perpendicular to the IR?
OML (orbitomeatal line)
What should be in contact with the table/wall buckey?
Forehead and nose
How is the MSP in relationship to the IR?
perpendicular
What is the central ray location?
Exiting the naseon
How should the petrous ridges be demonstrated?
Should fill orbits
How can you determine rotation?
Lateral orbits lateral skull distance symmetrical
How can you determine tilt?
One orbit will be higher than the other
If the petrous ridges are demonstrated in the lower 1/3 of the orbits, what error occurred (if there is an error)?
Head was not tucked enough
If the petrous ridges are demonstrated above the roof of the orbits, what error occurred (if there is an error)?
Head was tucked too much
If there is greater distance seen between the lateral margin of the orbit and the lateral border of the skull on the right side, what error occurred (if there is an error)?
rotation to left
If the right orbital roof is demonstrated above the left orbital rood, what error occurred (if there is an error)?
Tilt to the left
If the patient’s neck cannot be flexed as required, what line may be used? How would you adjust the CR angle?
use IOML, 15 degree caudal angle