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Radiology > Neuroradiology > Flashcards

Neuroradiology Flashcards

1
Q

MR Spectroscopy findings in TB

A

Elevated lipids

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2
Q

Face of giant panda on MRI. What is the disorder?

What part is involved

A

Wilson’s disease

Hepatolenticulostriate degeneration

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3
Q

Calcification seen on Brain MRI. What neoplasms could it be

A 
Craniopharngioma
Astrocytoma
Choroid plexus 
Oligodendroglioma
Medulloblastoma
Ependymoma
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4
Q

Iron deposition in Globus pallidus is seen in ____.

What is MRI appearance called?

A

Hallevorden Spatz Disease

Eye of tiger appearance

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5
Q

Ring enhancement on MRI is seen in?

A 
Tuberculoma
Toxoplasmosis
Neurocysticercosis
Metastatsis
Brain Abscess
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6
Q

Open ring sign on MRI is seen in?

A

MS

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7
Q

Drop metastasis is seen in

A

Medulloblastoma

Primary CNS Lymphoma

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8
Q

Tumors showing CSF spread are

A 
Germinoma
GBM
Ependymoma
Medulloblastoma
CNS lymphoma
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9
Q

What part of brain is affected in huntington’s

A

Caudate nucleus

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10
Q

CMV involves what part of brain?

A

Periventricular

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11
Q

Where are lesions of metastatsis usually found in brain

A

Grey-white matter interface

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12
Q

What are Dawson’s fingers ? When are they seen?

A

Area of lesion around subependymal veins (perivenular).

Seen in MS

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13
Q

Spongiform lesion on gross specimen in brain correspond to which radiological sign?
Which disease are they linked with?

A

Cortical ribbon sign on MRI
Cortex and basal ganglia (deep grey matter) involved
Creutzfelt disease by prions is the cause

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14
Q

Bilateral optic nerve involvement is seen in which demyelinating disorder?

A

ADEM

vs unilateral in MS

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15
Q

Rice grain calcification is seen in ___

A

Cysticercosis

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16
Q

What areas are seen bright in DW-MRI?

Why?

A

Brain infarct
Brain Abscess
Due to less/no brownian movement

17
Q

Post-infection demyelinating disorder?
What infections is it linked with?
What else do you know about it?

A

ADEM
Measles, varicella, etc.
Widely scattered small foci of inflammation and demyelination.
Enhancement on Gd T1WI, hyperintense on T2 and FLAIR

18
Q

Medulloblastoma is associated with which syndromes?

What is the mutation?

A

Turcot’s Sx: APC Mutation
Li Fraumeni Sx: TP53 mutation
Gorlin’s Sx: PTCH mutation, sonic hedgehog pathway

19
Q

Hummingbird appreance on MRI brain is seen in?

What part of brain is involved?

A

PSP (Progressive Supranuclear Palsy)

Mid Brain Atrophy

20
Q

Canavan’s disease on MRSpectroscopy show ____.
What gross clinical feature is seen?
What is the other disease in which it is found? What else do you know about that disease?

A

Increased NAA
Large head
Also seen in Alexander’s Disease, it involves frontal part while canavan’s jnvlove whole brain. Rosenthal fibre also seen.

21
Q

Revise the table of dysmyelination disorders in mind

A

Add pic!!

22
Q

Most common site of extragonal germ cell tumor?
M/c in brain?
What sx is it associated with?

A

Mediastenum
Pineal
Perinaud sx: uoward gaze palsy

23
Q

Which brain tumor enlarges in pregnancy?

What are its MRI findings?

A

Meningioma

  1. Dural based
  2. Dural tail sign
  3. Intense homogenous enhancement
24
Q

GBM on MRI shows what sign and why?

A

Butterfly glioma
Due to corpus callosum involvement
Heterogenously intense

25
Q

Which brain tumor spreads contagiously?

A

Ependymoma

26
Q

Ice cream cone sign seen in?

A

Vestibular schwannoma

27
Q

Racing car appearance o. MRI is seen in

A

Agenesis of corpus callosum

28
Q

Posterior Commisure syndrome is another name for ____.
Significant clinical feature?
Which part of brain is involved for this symptom?

A

Perinaud’s Sx
Upward gaze palsy (add pic)
Due to compression of Superior Colliculus

29
Q

Bracket calcification seen in

A 
Intracranial Lipoma (congenital)
M/c site is around corpus callosum
30
Q

Diseases in which Hippocampus involved?

A

Alzeihmer’s

Meseal temporal sclerosis causing epilepsy

31
Q

MRSpectroscopy features of glioma?

A 
Choline increase (inc cells)
Creatine decrease (dec metabolic activity)
NAA decrease (neuron number dec )

Radiology (2 decks)

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