Fig. 3

Relationship between the identified CBF features and clinical rating scales. There were significant correlations of normalized CBF in left postcentral gyrus (PoG.L) and thalamus with headache severity score, normalized CBF in left superior frontal gyrus (SFG.L) with HIT and MIDAS, normalized CBF in left middle frontal gyrus (MFG.L) with SAS and SDS among all patients (A-F, all p values < 0.01, after FDR correction). CBF: cerebral blood flow, HIT-6: Headache Impact Test-6, MIDAS: Migraine Disability Assessment Score, SAS: Self-Rating Anxiety Scale, SDS: Self-Rating Depression Scale