Table 2:

Migraine diagnostic and treatment modalities prior to acquisition of MR neurography

Botox		Nerve Block		Radiofrequency Ablation		Previous Operation^{^a}		Previous Head/Neck Imaging^{^b}
Yes	No	Yes	No	Yes	No	Yes	No	Yes	No
13 (72%)	5 (28%)	15 (83%)	3 (17%)	5 (28%)	13 (72%)	6 (33%)	12 (67%)	6 (33%)	12 (67%)

↵a Previous migraine operations included occipital nerve neurectomies or neurolysis.
↵b All previous imaging was either standard 1.5T of the brain or cervical spine MRI or CT and evaluated as negative for pathology related to migraine symptoms.