Nonconvulsive Status Epilepticus with Transient Focal Hyperperfusion in the Cerebral Hemisphere and Crossed Cerebellar Hypoperfusion on Arterial Spin Labeling MRI

Abstract

  A 36-year-old woman suffered from a sudden onset of consciousness disturbance and left hemiparesis. Fifteen days later, the latter symptom persisted. Arterial spin labeling (ASL) imaging revealed hyperperfusion in the right cerebral hemisphere and hypoperfusion in the left cerebellar hemisphere when compared with the left cerebral hemisphere and the right cerebellar hemisphere, respectively. Electroencephalography showed an abnormal slow wave in the right cerebral hemisphere. When the left hemiparesis improved on the 43th hospital day, hyperperfusion in the right cerebral hemisphere and left-to-right cerebellar asymmetry on ASL imaging resolved. The patient might be suspected of having nonconvulsive status epilepticus with transient focal hyperperfusion in the cerebral hemisphere and crossed cerebellar hypoperfusion.