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CT SCAN IN SAH

Neurosurgery

CT SCAN IN SAH

A good quality scan will detect SAH > 95% if the case is scanned within 48hrs of the ictus. CT can also assess the following:
1. Hydrocephalus - occurs acutely in 21% of ruptures.
2. Hematoma – intraparenchymal or subdural which may require urgent evacuation.
3. Amount of blood in the subarachnoid space - this is an important prognosticator for vasospasm.
4. In multiple aneurysms, CT can identify which one bled.
5. Non-contrast CT can predict aneurysm location in 70% of cases.


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REFERENCES

1. Wilkinson, I. (2017). Oxford handbook of clinical medicine. Oxford: Oxford University Press.
2. Hannaman, R. A., Bullock, L., Hatchell, C. A., & Yoffe, M. (2016). Internal medicine review core curriculum, 2017-2018. CO Springs, CO: MedStudy.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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