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For AP projection, where is the CR?
- At L4-L5
- Illiac Crest Line.
For AP L5 - S1, where is the CR? How much do you angle?
Direct 30-35 degrees cephalad level of asis.
Where is the CR for an oblique projection?
2 inch medial to the upside of asis and 1 1/2 inch above crest.
What does the oblique proejction show?
Spophyseal joints closest to he film and scotty dog.
For lateral, where is the CR?
- At the level of illiac crest (L4-L5)
- For 11x14, 1 1/2 nch above illiac crest.
What do you see in a lateral projection?
opens up the intervertebral foramina.
Where is the CR for a lateral L5-S1?
CR 1 1/2 inch below crestand 2 inches posterior to asis.