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Debebe Theodros, C. Rory Goodwin, Matthew T. Bender, Xin Zhou, Tomas Garzon-Muvdi, Rafael De la Garza-Ramos, Nancy Abu-Bonsrah, Dimitrios Mathios, Ari M. Blitz, Alessandro Olivi, Benjamin Carson, Chetan Bettegowda and Michael Lim

neurovascular compression, specifically the presence of the “CSF rim” sign, defined as a narrow CSF signal between the nerve and the vessel on axial constructive interference in steady-state (CISS) imaging, as well as the “deviation” sign, which was defined as deviation on horizontal compression also identified on axial CISS. 14 Zhang et al. also attempted to identify prognostic factors for patients undergoing MVD for the treatment of TN. Their group identified typical symptoms, preoperative MRI findings, and intraoperative findings of vessel compression as prognostic