A, Bilateral disk herniation at C6–7 encroaching the spinal canal. A, Bilateral disk herniation at C6–7 encroaching the spinal canal. The SpineWand device was placed into position by using CT-guidance and switching to direct fluoroscopy for the disk ablation procedure. This allowed activation of the plasma-field energy directly inside the herniation.B and C, The loop-shaped active electrode was inserted beyond the posterior limit of the vertebral body into the spinal canal.D, At the end of the procedure, the gas generated from the tissue excision is evident inside the disk.E, The 5-month follow-up image shows only minimal or questionable reduction of disk size; despite this, the patient reports good clinical improvement (Macnab 3) (see text for discussion). G. Bonaldi et al. AJNR Am J Neuroradiol 2006;27:2104-2111 ©2006 by American Society of Neuroradiology