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Radiology > Neuroimaging > Flashcards

Neuroimaging Flashcards

1
Q 
Stroke
Trauma
Min subarachnoid hemorrhage
Hemorrhage
CTA
A

CT Scan

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2
Q 
Hyperacute stroke
Perfusion study
Neoplasm vs abscess
White matter disease
Hemorrhage
Infection
MRA
A

MRI

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3
Q

CT scan anatomical landmarks

A

Falx cerebri
Superiir sagittal sinus
Gyrus
Sulcus

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4
Q

During infarcts sulci are checked for

A

symmetry

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5
Q

Earliest sign of infarct

A

sulci effacement

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6
Q

At the level of ventricles early sign of hyperacute infarct

A

Loss of gray-white matter delineation

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7
Q

Between left and right ventricle

A

Septum pellucidum

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8
Q

Causes brain edema

A

Cytotoxic
Vasogenic
Interstitial
Combined

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9
Q

Cellular swelling
Intact BB

Failure of ATP-dependent Na/K ATPase pump ion transport

Loss of gray-white matter differentiation

A

Cytotoxic edema

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10
Q

Destruction of BBB
Extracellular
Only white matter becomes hypodense
More defined or heightened gray white matter differentiation

A

Vasogenic edema
brain tumor
metastasis

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11
Q

Mainstay of imaging in acute ischemic stroke

A

CT scan

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12
Q

Hyperacute infarct

1 h post infarct - earliest

A

Hyperdense MCA sign
Clinically, time stamp on injury
Clot within lumen or artery

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13
Q

Hyperacute infarct signs on CT

A

Loss of gray white matter
Sulci effacement
Loss of insular ribbon
Hyperdense MCA

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14
Q

Hyperacute infarct sign in CTA

A

Filling defect

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Radiology (2 decks)

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