Imaging of cerebral Infarction

Question 1

What are the types of cerebral oedema ?

Answer 1

Cytotoxic

Vasogenic

Question 2

The blood brain barrier in cytotoxic cerebral oedema is …………..

Answer 2

Intact

Question 3

The differentiation between grey and white matter in cytotoxic cerebral oedema is ……….

Answer 3

Lost

Question 4

In cerebral ischemia we can see …………… celebral edema

Answer 4

Cytotoxic

Question 5

Cytotoxic cerebral oedema mainly affect ………. matter

Answer 5

Grey

Question 6

The blood brain barrier in vasogenic cerebral oedema is ……………

Answer 6

Disrupted

Question 7

Vasogenic cerebral oedema mainly affect the ……….. matter

Answer 7

White

Question 8

In cerebral haemorrhage and cerebral abscesses and cerebral contusions and brain tumours we can see ……….. cerebral edema

Answer 8

Vasogenic cerebral edema

Question 9

In hyperacute cases of stroke it is best to use ………

Answer 9

Gradient recalled echo GRE/MRI

Question 10

FLAIR/MRI is used for ……….

Answer 10

Early stage of Subarachnoid hemorrhage

Question 11

CT signs of early MCA Ischemia ?

Answer 11

Hyper dense MCA
hypoattenuasion and obscuration of lentiform nucleus
Insular ribbon sign (Hypodensity and swelling of insular cortex)

Question 12

Brain CT, T1WI, T2WI and FLAIR/MRI could be ………….. in <6-12hr

Answer 12

Normal

Question 13

Diffusion MRI sequence (DWI) shows ………..

Answer 13

Infarcted area of the brain

Question 14

Perfusion MRI sequence (PWI) shows …………..

Answer 14

Area of the brain with no blood flow

Question 15

Penumbra is ?

Answer 15

Mismatch between Diffusion (DWI) and Perfusion (PWI) sequences.

Area of the brain that we can’t save.

Question 16

What are the black things in CT ?

Answer 16

CSF
Old infarction
Old hematoma
Simple cyst

Question 17

What are the bright things in head CT ?

Answer 17

Acute hemorrhage
Calcification
Contrast in vessels

Question 18

What’s the investigation of choice in head trauma and stroke ?

Answer 18

No contrast head CT

Question 19

In vasogenic cerebral edema, the differentiation between white and grey matter is …………..

Answer 19

Intact