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4 Cards in this Set
- Front
- Back
Label this CT head
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What does this CT head show? (general approach)
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Falx Cerebri - the dural folds serperating the cerebral hemispheres, is it in the middle of the head, or is it shifted (mass affect)
Symmetry - are the 2 cerebral hemispheres roughly the same size and shape, consider with regards the falx cerebri and mass affect Ventricles - can you see the lateral ventricles - are they dilated or do they contain blood (white) increasing risk of hydrocephalus. They should be black showing they contain CSF - any opacity in them is abnormal - it may look like a tube - suggesting a shunt. Can you see the 3rd and 4th ventricles? Again - containg CSF or Blood? Midbrain - visualised by looking for a smiley face on the CT. Sulci - are they particularly atrophied (very prominent) then decide is this normal age related atrophy or is it heightened (perhaps as in alzheimers. Regard the whole brain and look for any subtle changes in brain density. An infarct will be less dense appear blacker like CSF in the ventricles, an old infarct or tumour will be more dense (i.e. whiter). Identify where the abnormality is - the temporal lobe is identified by presence of the eyes on the CT - if the eyes aren't present than it will be the parietal lobe. The 4th ventricle is identifiable at the level of the start of the cerebellum. |
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What 3 structures make up the brain stem?
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Medulla oblongata
Midbrain Pons |
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What is the lobe of the brain labelled with an x?
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Temporal lobe - if you can see eyes in the CT then it has to be the temporal lobe. If you can't i.e. you're looking at a section of CT at a higher level to the eyes, then it is the parietal lobe.
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