CT-Guided Block and Radiofrequency Ablation of the C2 Dorsal Root Ganglion for Cervicogenic Headache

aFrom the Departments of Radiology (J.L.C., E.J.E.)

aFrom the Departments of Radiology (J.L.C., E.J.E.)

bNeurosurgery (M.V.), Weill Cornell Medicine, NewYork-Presbyterian Hospital, New York, New York

cDepartment of Neurosurgery, (M.V.), Center for Comprehensive Spine Care, New York, New York

dDepartment of Radiology & Biomedical Imaging (J.F.T.), University of California, San Francisco and Zuckerberg San Francisco General Hospital, San Francisco, California

eDepartment of Radiology & Biomedical Imaging (V.S,), University of California, San Francisco, San Francisco, California.