Patterns of hypoperfusion encountered at clinical spin-tag perfusion imaging
Hypoperfusion Pattern
Causes
Focal
Ischemic core
Ischemic penumbra
At-risk tissue
Leukoaraiosis
Remote insult
Seizure activity (interictal)
Ventriculomegaly
Global
Poor cardiac output
Vasospasm
Brain death
Cerebral atrophy
Exogenous drugs