Imaging of the Brain and Skull Flashcards
1
Q
3 available modalities for skull and brain
A
Radiographs
CT
MRI
2
Q
What are x-rays used for?
A
Sinusitis
3
Q
When can ultrasound be used?
A
Until the fontanelles close
Under 3 months of age
4
Q
3 sinuses
A
Frontal
Ethmoid
Maxillary
5
Q
Epidural hematoma on CT
A
Arterial injury, associated with skull fractures
Biconvex, lemon shaped
Blood does not cross sutures!
6
Q
Subdural hematoma on CT
A
Venous injury
Crescent shaped
Crosses suture lines
7
Q
When would you use non-contrast?
A
First line imaging modality for all suspected acute intracranial pathology
Rapid, convenient and widely available
8
Q
When would you use IV-contrast?
A
Used to visualize the arteries and venous structures and soft tissue masses (ex: suspected cancers)
Used in caution in patients with renal failure
