Abstract #0416

The Feasibility of Radiofrequency Rhizotomy Lesion Visualization in the Trigeminal Ganglion using 7.0-Tesla MRI

Kellen Mulford¹, David Darrow², Sean Moen², Samuel Ndoro², Bharathi D. Jagadeesan³, Andrew W. Grande², Donald R. Nixdorf⁴, and Pierre-Francois Van de Moortele¹

¹Center for Magnetic Resonance Imaging, University of Minnesota, Minneapolis, MN, United States, ²Department of Neurosurgery, University of Minnesota, Minneapolis, MN, United States, ³Department of Radiology, University of Minnesota, Minneapolis, MN, United States, ⁴Department of Diagnostic and Biological Science, University of Minnesota, Minneapolis, MN, United States

Pain recurrence following invasive treatments for trigeminal neuralgia is common, yet the treatment decisions in these situations lack objective guidance. The goal of this work was to establish the feasibility of using 7.0-Tesla MRI to visualize treatment related effects from percutaneous radiofrequency rhizotomy procedures. We scanned two patients with trigeminal neuralgia and one human cadaver specimen at 7.0-Tesla after radiofrequency rhizotomy procedures. Both acute and long-term treatment related effects were successfully visualized by our protocol. Future work will recruit a large cohort of trigeminal neuralgia patients to correlate imaging findings with clinical outcomes.

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