spine (l-spine, sacrum, coccyx) Flashcards
where does xiphoid tip correlate?
T9-10
where does lower costal margin correlate to?
L2-3
where does the Iliac crest correlate?
L4-5
where does the ASIS correlate?
S1-2
AP lumbar SID
40 inches
positioning for AP lumbar spine; why?
supine, flex knees and hips; to reduce lordotic curve
CR entrance for AP lumbar spine with a 14x17 field
L4-5 (iliac crests)
CR entrance for AP lumbar spine with a 11x14 field
L3 (lower costal margins)
CR angle for AP lumbar spine
perpendicular to IR
Eval criteria for AP lumbar spine
-__ through __
-Spinous processes equal distance from the _________
-(Open/closed) intervertebral joint spaces
-Lateral margins of the ______________
T12 through S1, pedicles, open, psoas muscle
AP/PA Obliques lumbar spine SID
40 inches
rotation for oblique lumbar spine
45 degrees
positioning for AP Oblique lumbar spine
rotate 45 degrees, bend knees, bring arm further from IR across the chest
CR entrance for AP oblique lumbar spine
L3 (lower costal margin), 1-2 inches above iliac crest and 2 inches medial to ASIS
CR angle for AP oblique lumbar spine
perpendicular
___________ are best visualized with an AP/PA oblique lumbar spine image
zygapophyseal joints
Scotty dog: what is the ear?
superior articular process
Scotty dog: what is the nose?
transverse process
Scotty dog: what is the eye?
pedicle
Scotty dog: what is the neck?
pars interarticularis
Scotty dog: what is the leg?
inferior articular process
Scotty dog: what is the “line behind the ear”?
zygapophyseal joints
Eval criteria for Oblique l spine
-___ to ___
-Zygapophyseal joints closest to the IR _______
-Appearance of the __________
-Posterior edge of the pedicle situated in the ________________
T12 to S1, open, Scotty Dog, center of the vertebral body
Lateral l-spine SID
40 inches
positioning for lateral l-spine
lateral recumbent, flex knees, support between knees/ankles; may place radiolucent support under waist to keep parallel
CR entrance for lateral l-spine on 14x17
L4-5 (iliac crests)
CR entrance for lateral l-spine on 11x14
L-3 (1.5 inches above the iliac crest)
CR angle for lateral l-spine
perpendicular
Eval criteria for lateral l-spine
-___ to __
-Posterior-lateral aspect of vertebral bodies __________
-Open __________________ and _______
T12 to S1, superimposed, intervertebral foramen and disk spaces
SID for lumbar flex/extension
40 inches