PT - JOURNAL ARTICLE AU - Chazen, J.L. AU - Ebani, E.J. AU - Virk, M. AU - Talbott, J.F. AU - Shah, V. TI - CT-Guided Block and Radiofrequency Ablation of the C2 Dorsal Root Ganglion for Cervicogenic Headache AID - 10.3174/ajnr.A6127 DP - 2019 Jul 04 TA - American Journal of Neuroradiology 4099 - http://www.ajnr.org/content/early/2019/06/27/ajnr.A6127.short 4100 - http://www.ajnr.org/content/early/2019/06/27/ajnr.A6127.full AB - SUMMARY: The purpose of this report is to describe the technical aspects of CT-guided C2 dorsal root ganglion diagnostic block and radiofrequency ablation for refractory cervicogenic headache. CT guidance allows precise and safe positioning of a needle adjacent to the C2 dorsal root ganglion. At-risk neural and vascular structures can be avoided with CT, and it can provide a thorough understanding of upper cervical neuroanatomy.DRGdorsal root ganglionRFradiofrequency