Spine positions and CR Flashcards
what is the CR of an AP open mouth?
mid mouth
what 2 structures need to be superimposed to showcase a correct AP open mouth?
base of the skull and maxilla/upper incisors
what anatomy must be shown on an AP open mouth?
- odontoid process
- vertebral body of C2
- lateral masses of C2
- traverse process of C2
- C1-C2 atlantoaxial joints
what is the CR of an AP axial cervical spine?
C4 (thyroid/hyoid bone) with a tube angle of 10-15 degrees cephalad
what anatomy must be shown for an AP axial cervical spine?
C3-T2 vertebral bodies and intervertebral joints
what is the CR of an oblique cervical spine?
C4 with a tube angle of 10-15 degrees cephalad
what anatomy must be demonstrated in an oblique cervical spine?
intervertebral foramina open and pedicles
what is the CR of a lateral cervical spine?
- C4
- SID of 72 inches
what anatomy must be demonstrated in a lateral cervical spine?
C1-C7 intervertebral joint spaces and vertebral bodies demonstrated
why do we need to lift the chin up when positioning for a lateral c-spine?
to remove any superimposition between the mandible and C1-C2
what is the CR of a Swimmer’s view?
T1/1 inch above jugular notch
- SID of 72 inches
what anatomy is demonstrated in the Swimmer’s View?
vertebral bodies and intervertebral disk spaces from C5-T3
what is the CR for an AP thoracic spine?
- T7
- 3-4 inches below jugular notch
what anatomy is demonstrated in an AP thoracic spine?
- 12 thoracic bodies
- intervertebral joint spaces
- spinous and transverse processes
what is the CR for a lateral thoracic spine?
- T7
- 3-4 inches below the jugular notch
what anatomy is demonstrated in a lateral thoracic spine?
- 12 thoracic bodies
- intervertebral joint spaces open
- spinous and transverse processes
what is the CR for an AP lumbar spine?
- L3
- 1.5 inches above iliac crest
what anatomy must be demonstrated in an AP lumbar spine?
- T12-S1
- bodies
- intervertebral joints open
- spinous/transverse process
- SI joints
- sacrum
what is the CR for an oblique lumbar spine?
- L3
- 1-2 inches above iliac crest and 2 inches medial upside ASIS
what anatomy is demonstrated in an oblique lumbar spine?
- LPO/RPO = L1-L4 downside zygapophyseal joints. Scottie dog visible
- LAO/RAO = L1-L4 upside zygapophyseal joints. Scottie dog visible
what is the CR of a lateral lumbar spine?
- L3
- 1.5 inch above the iliac crest
what anatomy is demonstrated in the lateral lumbar spine?
- L1-L4 bodies
- intervertebral joint spaces open
- foramina and spinous process
what is the CR for a spot/L5-S1 lumbar spine?
- 1.5 inches inferior to the iliac crest
- 2 inches posterior to ASIS
what anatomy is demonstrated in the spot/L5-S1 lumbar spine?
- open L5-S1 bodies
- intervertebral joint spaces open
- foramina/spinous process
what is the CR of the AP Axial sacrum?
- mid sacrum
- 2 inches above the symphysis pubis
- tube angle of 15 degree cephalic
what anatomy is demonstrated in the AP axial sacrum?
- non foreshortened image of the sacrum
what is the CR of the AP axial coccyx?
- tube angle of 10 degrees caudal
- 2 inches superior to the symphysis pubis
what anatomy is demonstrated in the AP axial coccyx?
non foreshortened image of the coccyx
what is the CR to the lateral sacrum and coccyx?
3-4 inches posterior to the upside ASIS
what anatomy is demonstrated in the lateral sacrum and coccyx?
lateral view of L5-S1 intervertebral joint
what is the CR to an AP axial SI joint?
- 2 inches below the ASIS
- tube angle of 30 degrees (male)/35 degrees (female) cephalic
what is the CR to an oblique SI joint?
1 inch medial to the ASIS
what anatomy is demonstrated in the oblique axial SI joint?
open upside SI joint
