Neurology · Neurosurgery · Radiology
Fisher CT Group (Original) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
This is the original non-linear grouping system, not the modified Fisher scale; group 3 had the greatest vasospasm risk.
Result
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Formula inputs
- Original Fisher CT group
Primary source
Fisher CM, Kistler JP, Davis JM. Relation of cerebral vasospasm to subarachnoid hemorrhage visualized by computerized tomographic scanning. Neurosurgery (1980)
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