Lecture 7A - Fetal Spine Flashcards
the ____ end of the neural tube develops into the spine
caudal
the ____ end of the neural tube develops into the brain
rostral
the central cavity of the neural tube develops into the
central canal
___ somites develop into (3)
sclerotome
dermatome
myotome
the cervical, thoracic and lumbar spine all have (3)
vertebral body
vertebral arch
vertebral foramen
SC travels though
vertebral foramen
what are the echogenic ossification centres of fetal spine (2)
body, left/right vertebral arch
what does transverse spine look like? what are the structures
3 echogenic triangles:
2x posterior neural arches
1x centrum/body
a fetal spine with 2/3 lines echogenic dots is what plane? what are the echogenic dots
coronal
when 2: pedicles
when 3: pedicles + centrum/body
a fetal spine with 2 parallel lines of echogenic dots is what plane? what are the dots?
sagittal
posterior arches
centrum
what echogenicity is the SC?
hypoechoic
what is the tapered endo of the SC seen at L2,L3?
conus medullaris
what is the connective tissue at end of SC?
filum terminale
most common location spina bifida
lumbosacral
indications for fetal spine US (3)
prev U/S suspected abnormality
fam Hx neural tube defects
increase AFP in amniotic fluid
