Neuro Flashcards

1
Q

Carbon monoxide poisoning

A

T2 hyperintense globus pallidus

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2
Q

Craniopharyngeoma

A

Internal calcs
Light bulb avid heterogenous enhancement

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3
Q

Cruciform uptake in pons

A

MSA

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4
Q

Best to assess pituitary tumour

A

Coronal

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5
Q

Ependymoma

A

Peritumoural oedema

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6
Q

Pituitary macroadenoma

A

T1 dark
T2 bright
Enhances less than normal pituitary

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7
Q

Spinal avf

A

T6- conus medularis
Involves pial vessels
Outside on surface of cord

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8
Q

Spinal avm

A

Nidus between artery and vein
Intramedullary

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9
Q

Superficial siderosis

A

Late complication of sah

Sensorineural hearing loss
Ataxia
Cerebellar atrophy
Low signal t2*
Blooming

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10
Q

Prusak space eroding scutum

A

Cholesteatoma

Flaccida-scutum
Tensa- ossicles

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11
Q

Jugular foramen smooth widening

A

Schwannoma

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12
Q

Medulloblastoma

A

Ct hyperdense
Roof of 4th ventricle

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13
Q

Cryptococcus

A

Gelatinous perivascular space
No enhancement

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14
Q

Toxoplasmosis

A

Low choline on spect
Ring enhancing
Involved basal ganglia and peripheral cortical white matter

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15
Q

Tolosa hunt

A

Cavernous sinus inflammation
Periorbital headache and opthalmoplegia
Enhancement and high t2
Rapid response to steroids

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16
Q

Pml

A

Involves u fibres
Parietal occipital
No mass effect or brain atrophy

17
Q

Hiv

A

Symmetrical
Spares u fibres

18
Q

Temporal.lobe mass

A

Ganglioglioma
Temporal lesion

19
Q

Oligodendroglioma

A

Cortical based
Calcifies
Frontal lobe usually

20
Q

Ca lung with temporal t2 changes

A

Limbic encephalitis

(Small cell - basically paraneoplastic )
Differential is HSV but titre would be negative

21
Q

Tumefactive MS

A

Large aggressive demyelinating lesions
I’ll defined ring enhancing
Little surrounding oedema

22
Q

Restricting brain lesions

A

Gbm
Medulloblastoma
Lymphoma

(Abscess restricts centrally )

23
Q

Brain Mets

A

Rim enhancing
(Old man, it’s this )

24
Q

Tb spondylitis

A

Subligamentous involvement
Lower thoracic/upper lumbar

25
Q

Inverted papilloma

A

Convoluted cerebriform pattern on T2 and T1 post con

26
Q

Mucocele

A

Rim enhancement
Expansion
T2 hyper

27
Q

In trigeminal neuralgia

A

3D ciss MRI

(Or post contrast T1 FS)

28
Q

Pial angioma and gyriform calcification

A

Sturge weber

29
Q

Metaphyseal not crossing

A

Osteomyelitis in paeds. In young paeds before physis closes - can cross to epiphysis

30
Q

Epiphyseal lesions

A

Gct and osteoblastoma

31
Q

Posterior cingukate gyrus

A

Alzheimers

32
Q

Anterior cingulate spared

A

Lewy body

33
Q

Mesial temporal atrophy and posterior cingulate gyrus as well as precuneus

A

Alzheimers

34
Q

Temporal lobe, cystic enhancing lesion with calcifications .
T1 iso and T2 hyper

A

GANGLIOMA