Spine positioning review Flashcards
Why do we extend the chin on a lateral C-spine?
To prevent superimposition of the mandible on upper vertebrae
What are the criteria for an acceptable AP Axial C-spine view?
C3-T2 demonstrated, base of skull and mandible superimpose C1-C2, intervertebral disk spaces open
Why should we shoot PA instead of AP for scoliosis series in children?
It significantly reduces radiation dose on sensitive areas such as the thyroid gland and breast tissue and gonads.
Where does CR enter for AP C-spine Axial, oblique and lateral?
C4 - thyroid cartilage
Where does CR enter for AP open mouth?
through center of mouth
Where does CR enter for AP and lateral thoracic?
T7 - 3-4 inches below below jugular notch
Where does CR enter for AP lumbar and lateral lumbar?
At the iliac crest
Where does CR enter for oblique lumbar?
1-2 inches above iliac crest
Where does the CR enter for L5-S1 spot view?
1.5 inches inferior to iliac crest and 2 inches posterior to ASIS
Where does the CR enter for AP Axial sacrum and coccyx?
2 inches above pubis sympysis
Where does CR enter for lateral sacrum/coccyx?
3-4 inches posterior to ASIS
Which projections of the spine require the CR to be angled?
AP Axial C-spine, C-spine obliques, AP axial sacrum/coccyx
What is another name for AP open mouth?
Odontoid
Why would we use hyper flexion and hyper extension lumbar spine views?
Assessment of mobility at a spinal fusion site.
Why would we use hyper flexion and hyper extension on cervical spine views?
Demonstrate AP vertebral mobility, whiplash, and follow up on spinal fusion surgery
