PT - JOURNAL ARTICLE AU - Chazen, J. Levi TI - CT-Guided C2 Dorsal Root Ganglion Injection and Radiofrequency Ablation for Cervicogenic Headache AID - 10.3174/ajnr.A8651 DP - 2025 Feb 01 TA - American Journal of Neuroradiology PG - 434--434 VI - 46 IP - 2 4099 - http://www.ajnr.org/content/46/2/434.short 4100 - http://www.ajnr.org/content/46/2/434.full SO - Am. J. Neuroradiol.2025 Feb 01; 46 AB - CT-guided injection and radiofrequency ablation (RFA) of the C2 dorsal root ganglion (DRG) is a safe and effective treatment for cervicogenic headache arising from C1–C2 joint arthritis. The C2 nerve root is unique in that it lacks a motor component; RFA can be performed with pain relief in exchange for occipital numbness. This video article outlines the imaging anatomy and technical considerations of this procedure.