Brain imaging

Question 1

1st line investigation for brain injury?

Answer 1

• CT scan

Question 2

What may cause an ischaemic stroke?

Answer 2

• embolism
• thrombosis
• arterial dissection
• reduced systemic circulation

Question 3

What must be done before treating a suspected stroke with thrombolysis and why?

Answer 3

• ct scan

- rule out haemorrhagic stroke

Question 4

How might an ischaemic stroke appear on ct?

Answer 4

• normal
• wedge shaped
• loss of grey white matter differentiation

Question 5

Most common site of stroke ?

Answer 5

• middle cerebral artery

Question 6

What are the 2 main broad divisions of an intracranial haemorrhage?

Answer 6

• intra axial (within parenchyma)

- extra axial (outwit parenchyma)

Question 7

3 division of an extra axial haemorrhage?

Answer 7

• extradural
• subdural
• subarachnoid

Question 8

causes of a extradural haemorrhage

Answer 8

• middle meningeal artery rupture

Question 9

appearance of an extradural haemorrhage

Answer 9

• biconvex (lense)

Question 10

appearance of subdural haemorrhage?

Answer 10

• semilunar

Question 11

appearance of subarachnoid haemorrhage

Answer 11

• follows sulci

Question 12

complications of a subarachnoid haemorrhage?

Answer 12

• hydrocephalus
• vasospasm
• infarction

Question 13

Brain metastasis may appear as what on CT?

Answer 13

• Ring enhancing

Question 14

Explain subfalcine herniation?

Answer 14

• aka. cingulate

- brain tissue displaced under falx cerebri

Question 15

hydrocephalus may appear like what on ct?

Answer 15

• rounding of the ventricles

- ventricles larger