MRI, PET and SPECT imaging. (A) T2 FLAIR image shows a large left PTO multilobar dysplasia. (B) PET shows significant hypometabolism corresponding to the dysplasia. C) SPECT tracer uptake over the left occipital region.
Ictal onset scalp VEEG. (A) Ictal onset showing a rhythmic irregular 1-2-Hz low-amplitude spike-wave complex evolving into rhythmic 8-9-Hz activity over the left PTO region (T5-O1 and P3-O1 channel). (B) Nystagmus artifacts. (C) Ictal activity spreading to other areas. (D) Resolution and offset.