Acute brain infarction |
Acute brain haemorrhage (note: not old bleeds) |
Intracranial mass lesions (note: not meningiomas in locations considered highly unlikely to cause problems) |
Suspected intracranial aneurysm or vascular malformation (inc. cavernomata) (note: not aneurysms less than 7 mm in diameter) |
Colloid cyst of the 3rd ventricle |
Acute hydrocephalus |
Significant sinus disease with suspicion of underlying pathology (e.g. unilateral sinus opacification) |
Other unexpected, serious, or life-threatening findings |