Figure 2
Axial T1 3D FSPGR demonstrated right hemisphere polymicrogyria (PMG) with a flattened cortical surface and excessive surface convolutions (A: upper panels; white arrows). T2-weighted images revealed heterotopic neurons in the right frontal white matter zone (A: lower panels; white arrows). Interictal FDG-PET exhibited diffuse hypometabolism, especially in the right parietal region (B). Emetic frequency significantly decreased after phenobarbital administration in April 2014 (C: blank bars), and symptom-free intervals were prolonged in conjunction with ketogenic diet therapy (D: black bars). When the patient discontinued ketogenic diet therapy between November and December 2015, the symptom-free interval was significantly shortened (D: black arrows). *P<0.05.