Fig. 1
From: Arterial spin labeling for presurgical localization of refractory frontal lobe epilepsy in children
Preoperative ASL. A Case 1: ASL perfusion MRI depicts two hyperperfusions in the right medial frontal lobe, which is consistent with the epileptiform discharge position detected by VEEG and the suspicious thickened areas in FLAIR sequences. B Case 2: hypoperfusion was observed in the right frontal cortex, and the difference between the left and right frontal lobes exceeded the normal range of 0.2