Imaging of the Brain and Skull Flashcards

1
Q

3 available modalities for skull and brain

A

Radiographs
CT
MRI

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2
Q

What are x-rays used for?

A

Sinusitis

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3
Q

When can ultrasound be used?

A

Until the fontanelles close

Under 3 months of age

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4
Q

3 sinuses

A

Frontal
Ethmoid
Maxillary

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5
Q

Epidural hematoma on CT

A

Arterial injury, associated with skull fractures
Biconvex, lemon shaped
Blood does not cross sutures!

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6
Q

Subdural hematoma on CT

A

Venous injury
Crescent shaped
Crosses suture lines

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7
Q

When would you use non-contrast?

A

First line imaging modality for all suspected acute intracranial pathology
Rapid, convenient and widely available

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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

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