AP axial skull Flashcards
1
Q
What is the method name for this image?
A
Townes method
2
Q
What line should be positioned perpendicular to the IR?
A
OML
3
Q
How is the MSP in relationship to the IR?
A
Perpendicular
4
Q
What is the central ray angle/direction?
A
30 degrees caudad
5
Q
What is the central ray location?
A
2.5” above globella
6
Q
How should the petrous ridges be demonstrated?
A
Should fill orbits
7
Q
What structure should be demonstrate within the foramen magnum?
A
Dorsum selli
8
Q
If the structure mentioned above is closer to the left margin of the foramen magnum, what error occurred (if there is an error)?
A
Rotation to left
9
Q
If the patient’s neck cannot be flexed as required, what line may be used? How would you adjust the CR angle?
A
IOML and add 7 degree angulation
