- Acute subarachnoid hemorrhage
- Meningitis
- Susceptibility artifact
- High levels of inspired oxygen (e.g., in sedated kids)
- Meningeal metastases
- Leaky blood-brain barrier from cerebritis, PRES
- Delayed gadolinium clearance in renal failure
- Acute infarction (thought to be related to slow flow)
- Ruptured dermoid Cyst
- Moyamoya
Wednesday, August 12, 2009
Hyperintense Subarachnoid Space on FLAIR
Increased FLAIR signal may be seen in the subarachnoid space in conditions other than subarachnoid hemorrhage. Differential diagnosis:
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