Neuroradiology

Question 1

*Why do we need imaging in stroke?

Answer 1

T.Ei.B.E.R
1-to know reason of stroke
2-to eliminate bleeding
3-to determine the extent of infarction
4-to know etiology
5-Treatment

Question 2

Most common type of stroke?

Answer 2

Ischemic

Question 3

Which scanning method is used in brain stroke?

Answer 3

Non-contrast CT

Question 4

Which scan can distinguish between infarct and hemorrhage?

Answer 4

Non-contrast CT

Question 5

Which scan detect early infarcts in brain?

Answer 5

Diffuse weighted MRI

Question 6

Which scan detects fractures and hemorrhage[hematoma] in brain?

Answer 6

Non-contrast CT

Question 7

**which type of hematoma has a crescent shape ),
CAN cross sutures,
Can cross Falx and Tentorium

Answer 7

Subdural hematoma

Question 8

** **which type of hematoma has a Biconvex shape (),
CANNOT cross sutures,
Can cross Falx and Tentorium

Answer 8

Epidural hematoma

Question 9

Which type of hematoma is from middle meningeal artery/vein?

Answer 9

Epidural hematoma

Question 10

What is the most common cause and location of epidural hematoma?

Answer 10

90% skull fracture, mostly in temporal bone

Question 11

What are the most common causes of subarachnoid hemorrhage?

Answer 11

1-Aneurysm rupture
2-trauma

Question 12

What is seen on a CT in a pt with subarachnoid hemorrhage?

Answer 12

Hyper-density in sulci,cisternae and ventricules

Question 13

Hypo-dens brain=

Answer 13

Infarct

Question 14

Hyper-dens brain=

Answer 14

Hemorrhage

Question 15

**Which brain injury is indicated for use of MRI on it

Answer 15

Diffuse axonal injury

Question 16

Which scan do you use in penetrating injuries?

Answer 16

CT (not MRI due to possible metal present)

Question 17

What is the primary imaging method in intracranial tumors?

Answer 17

MRI

Question 18

What are the indications for CT in head trauma?

Answer 18

(NA>60SCNT)
1-nausea/vomiting/headache
2-seizures
3->60 yrs
4-alcohol/drug
5-neck trauma
6-coagulation disorders

Question 19

When is mechanical thrombectomy indicated in stroke patients?

Answer 19

The thrombus can be removed if onset of symptoms of stroke is less than 6 hours

Question 20

Which MRI is the best at detecting early acute infarcts?

Answer 20

Diffusion weighted MRI

Question 21

How do you determine PENUMBRA;the tissue at risk of stroke?

Answer 21

By determining the cerebral reserve capacity

Question 22

What is the approach to hemorrhagic transformation[complication of ischemic stroke]?

Answer 22

Heparinization tx