Flashcards in CT Head Deck (21)
What sort of radiation is used in CT?
What are the 2 main divisions of the brain?
Supratentorial and infratentorial regions
Which structure separates the frontal and parietal lobes?
What is the L sign?
Way of identifying central sulcus
What lies behind the lateral ventricles?
Name the 3 cisterns in the brain
Which of the dura has the most protective role for the brain?
What shape is an extradural haematoma on CT?
Why does extradural haematoma cause “talk and die” syndrome?
Haematoma grows until ICP > BP and blood can’t enter brain —> suddenly drop dead
Which patients are most at risk of subdural haematoma?
Which type of blood vessel is damaged in a subdural haematoma?
Where does the circle of Willis occupy?
Subarachnoid haemorrhage due to Berry aneurysm
What is the most common cause of intracerebral haemorrhage?
Which arteries perfuse the basal ganglia?
For how many hours will an ischaemic stroke appear normal?
How will an old infarct appear on CT?
Region of darkness as there is less blood (which is white)
What are the 3 main vascular territories of the brain?
Anterior, middle and posterior cerebral arteries
What is vomiting indicative of in cases of head trauma?
Extradural haemorrhage raising ICP
If a pt has a fall that causes him to have clear fluid leaking from nose, what is that fluid?