Invasive subdural grid monitoring
Patient with intractable epilepsy.
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Left temporal craniotomy with placement of subdural grids.
No evidence of acute haemorrhage. The basal ganglia and posterior fossa are normal.
Ventricles are of normal size with effacement of the left frontal and parietal sulci in the location of recent surgery.
IMPRESSION: No evidence of hydrocephalus or acute bleed.
Intracranial subdural grid monitoring is a diagnostic tool for the epileptogenic focus localization for planning surgery treatment.
This technique is reported as revealing a epileptogenic focus in 79% of monitoring sessions 1.