Test 4: 69 nasal imaging Flashcards
what views for skull xray
where is calvarium and cribiform plate
hyoid bones
where is mandibular ramus
temporomadibular joint
zygomatic arch
tympanic bulla
calvarium and cribiform plate
air spaces?
open mouth view is helpful to see
nasal passages- mandible no longer in the way
sinuses for dogs
frontal
maxillary
rostrocaudal view
paried frontal sinus
dog (left), cat (right)
nasal septum is made by — and is supported by — and is filled with —
Cartilaginous, ossified caudally
vomer bone
turbinates
- Rostrally: dorsal and ventral conchae
- Caudally: Ethmoid conchae
flow chart for nasal imaging interpreting
most common fungal nasal infection in dogs and cats
dog: aspergillosis
catL cryptococcus
bacterial rhinitis is usually secondary to
intranasal foreign body
common intranasal cancer
lymphoma, adenocarcinoma
common intranasal cancers that involve bones
osteosarcoma, fibrosarcoma most common
how does CT work
takes a bunch of xrays at different angles
machine does a bunch of math
bone is what color on CT
white- hyperattenuating
what color is gas on CT
black- hypoattenuating
how does MRI work
Utilizes magnetic fields and electricity to manipulate atoms within the body at many different contiguous locations (“slices”) in order to provide volumetric information about tissues
tell the machine what tissue to highlight : T1 vs T2
CT or MRI better for soft tissue
MRI (bone black)
CT: (bone white)
