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AJNR - American Journal of Neuroradiology

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Percutaneous Radio-Frequency Mandibular Nerve Rhizotomy Guided by CT Fluoroscopy

S. Koizuka^a, S. Saito^a, K. Kubo^a, A. Tomioka^a, T. Takazawa^a, S. Sakurazawa^a and F. Goto^a

^a Department of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan

View larger version (69K): [in a new window]   Fig 1. Axial CT sections of the head. Arrow indicates foramen ovale (A), which is a landmark to identify the location of nerve exit from the cranium on CT images in this patient. The safest and shortest route (white line) to the target site (small arrow) is determined on the CT image (B, caudal section to A). The mandibular nerve immediately caudal to the foramen ovale in the posterior margin of lateral pterygoid plate (large arrow) is considered to be the target site.

View larger version (142K): [in a new window]   Fig 2. The needle tip is located at the target site of the mandibular nerve.