Department of Neurology;
First Medical Center of Chinese PLA General Hospital;
Beijing;
China;
Department of Radiology;
First Medical Center of Chinese PLA General Hospital;
Beijing;
China;
Department of Radiology;
Hainan Hospital of First Medical Center of Chinese PLA General Hospital;
Sanya;
Hainan Province;
China;
brain volume; chronic migraine; frontal lobe; magnetic resonance imaging; migraine; remodeling; thalamus; visual processing system;