Diseases in the head and neck are indicated for the<unk>  such as Subclavian steal syndrome, rupture of the carotid artery, carotid artery stenosis, non-traumatic subarachnoid haemorrhage, and intracerebral haemorrhage, stroke, intracranial aneurysm,<unk>  vasospasm,<unk>  arteriovenous malformation and embolisation of brain and neck tumours before operation.
Cerebral angiography
Perfusion scanning
Vertebral artery test
Carotid ultrasonography
Thrombodynamics test
Microangiography
Perfusion MRI
Intravascular imaging