Craniofacial - Skull Flashcards
Name the trhee skull types
mesocephalic
brachycephalic
Dolichocephalic
Mesocephalic
- average shaped head
- Petrous pyramids and MSP is 47 degrees
- width of skull is 75-80% of length
Dolichocephalic
- long, narrow, head
- petrous pyramids and MSP < 47 degres
- width is less than 75% of length
Brachycephalic
- short, borad, head
- petrous pyramids and MSP > 47 degres
- width is 80% or greater of legnth
indications fro skull radiography
Fractures
gunshot wounds
feoreign bodies
neoplasms
paget’s disease
Orbits are made up fo how many bones?
7 bones
3 cranial, 4 facial
What bones make up the orbits
frontal
sphenoid
ethomoid
maxilla
zygoma
lacrimal
palatine
why is imaging better done erect?
air/flui levels
why is it better to do PA?
better detail
less radiation to the eyes
easier to position head
How many sinuses?
frontal - 2
ethmoid - many
sphenoid - 1 or 2
maxillary - 2
when do frontal sinuses devellop?
ages 6-7
when do ehtmoid sinuses devellop?
teenage years
when do sphenoid sinuses devellop
ages 6-7
when do maxillary sinuses devellop?
babies are born with them
imaging sinuses indications
sinusitis - infection of sinus mucosa
secondary osteomeylitis - bone infection
sinus polyps or cysts
what sinus projection shows all 4 sinuses?
Lateral
