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Control Term Two > Brain imaging > Flashcards

Brain imaging Flashcards

1
Q

when is MRI most useful?

A

pituitary gland or brain stem

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2
Q

What colour is hyperdense?

A

white

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3
Q

what is hyperdense on CT?

A

bone and high density tings

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4
Q

what is hyperdense on T1 MRI?

A

fat, melanin, protein, contrast

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5
Q

what is hyperdense on T2 MRI?

A

fluid

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6
Q

what is hypodense on CT?

A

blood, air, fat, oedema

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7
Q

what is hypodense on T1 MRI?

A

fluid

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8
Q

what is hypodense on T2 MRI?

A

fat

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9
Q

T1 MRI grey matter is

A

grey

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10
Q

T1 MRI white matter is

A

white

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11
Q

T2 MRI grey matter is

A

white

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12
Q

T2 MRI white matter is

A

grey

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13
Q

TACI

A

total anterior circulation infarct

dysphasia, visuospatial disturbances, motor and sensory deficits

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14
Q

PACI

A

partial anterior circulation infarct

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15
Q

POCI

A

posterior circulation infarct

cranial nerve palsy
contralateral motor sensory deficit
eye movement problems
cerebellar dysfunction

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16
Q

what is a lacunar stroke?

A

occlusion of one of the penetrating arteries that provides the brain’s deep structures

17
Q

subarachnoid haemorrhage features

A

within sulci and/or gyri

usually due to circle of willis bleeding

18
Q

subdural haemorrhage features

A

sickle shaped
damage to cortical arteries
bleeding from underlying parenchyma
tearing of bridging veins from the cortex to draining veins

19
Q

extradural haemorrhage features

A

lentiform shaped

fractured parietal/temporal bone which damages middle meningeal artery or vein between dura and skull

20
Q

appearance of haemorrhage over time

A

hyperdense at acute stage
isodense
then hypodense when old

21
Q

commonest causes of subarachnoid haemorrhage?

A

intracranial arterial aneurysms
peri-mesenceohalic haemorrhage
vascular abnormalities

22
Q

presentation of SAH

A

thunderclap headache
vomiting
low GCS

23
Q

treatment of extradural haemorrhage

A

burr hole

24
Q

coup-contrecoup injury

A

soft tissue damage on one side bleeding on other side

Control Term Two (25 decks)

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