AP sacrum/coccyx Flashcards
(23 cards)
What are the 5 views of this anatomical area
AP sacrum Lateral sacrum AP coccyx Lateral coccyx Oblique SI joint
which views are done at 80 kVp
AP sacrum
AP coccyx
Oblique SI
which views are done at 90 kVp
Lateral sacrum
Lateral coccyx
what is the tube tilt in AP sacrum
15 degrees cephalad
what is the tube tilt in AP coccyx
10 degrees caudad
what is the FFD for all views minus AP sacrum/coccyx
40 inches
what is the FFD in AP sacrum
37 inches
what is the FFD in AP coccyx
38 inches
do all views need grid
YES
what is the film size in all views
10 x 12
what is the collimation in AP/lateral sacrum
8 x 12
what is the collimation in AP coccyx
6 x 8
what is the collimation in lateral coccyx
4 x 6
central ray Midline & 2” above the pubis symphysis
AP Sacrum
central ray 3-4” posterior to ASIS at the level of the ASIS
Lateral Sacrum
central ray Midline & 2” above the pubis symphysis
AP Coccyx
central ray 3-4” posterior & 2” distal to the ASIS
Lateral Coccyx
central ray level of the ASIS on the upside
Oblique SI Joint
Pt elevates knees, suspend breathing, can be done PA , pt should empty bowel prior
AP Sacrum
Pt in lateral position, suspend breathing, tight collimation to reduce scatter
Lateral Sacrum
Pt elevates knees, suspend breathing, can be done PA
AP Coccyx
Pt in lateral position, suspend breathing, can be combined w/ lateral sacrum
Lateral Coccyx
Oblique patient at 25°, set up as a right posterior oblique, you will see the left SIJ (you will see whatever joint is furthest from the film), the upside is labeled
Oblique SI Joint
