AP axial sacrum Flashcards
1
Q
What prep is recommended prior to this exam and why?
A
Bowl cleansing
2
Q
What is the central ray angle and direction?
A
15 degrees cephalic
3
Q
Why is this central ray angle used?
A
To compensate for the angle of the sacrum
4
Q
What is the central ray location?
A
MSP, 2” below ASIS, 2” above pubic symphysis
5
Q
If this exam is performed PA instead of AP, what adjustment must be made to the central ray?
A
15 degrees caudad
6
Q
How should the sacrum be demonstrated in this image?
A
not foreshortened or elongated, no superimposition
7
Q
How can you tell if there is rotation in this image?
A
Sacrum would not be in alignment with pubic symphysis
