"Wallerian degeneration"
"CT/MR perfusion"
Expected headings
"CT/MRI"
"CT/MR perfusion"
"Nuclear medicine"
"When affecting the cerebellum, it is a well-recognised phenomenon following cerebral infarction 2-4, although it can be a sequela of any significant supratentorial process (e.g. tumours 1, intracerebral haemorrhage 5, encephalitis 5, Dyke-Davidoff-Masson syndrome 6, radiation necrosis, status epilepticus 14, etc.). The most likely mechanism is thought to be interruption of cortico-ponto-cerebellar white matter tracts, which then results in deafferentation and hypometabolism of the contralateral cerebellar hemisphere 2."
"CT perfusion performed during an acute stroke may show a contralateral perfusion abnormality in about 20% of cases 4. In particular, CBF and CBV maps show only mild-to-moderate reduction in these parameters, which are not low enough to classify as infarctions 7. MR perfusion can also play a similar role 3,4."