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J Neurol Surg A Cent Eur Neurosurg 2013; 74(04): 251-257
DOI: 10.1055/s-0032-1330953
Technical Note
Georg Thieme Verlag KG Stuttgart · New York

Electromagnetic Navigation-Guided Radiofrequency Thermocoagulation in Trigeminal Neuralgia: Technical Note with Three Case Reports

Min-Jie Chen
1   Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
*   These authors contributed equally
,
Li-Xu Gu
2   Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
*   These authors contributed equally
,
Wei-Jie Zhang
1   Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
,
Chi Yang
1   Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
,
Min-Jun Dong
3   Department of Radiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
› Author Affiliations
Further Information

Publication History

15 March 2010

02 March 2012

Publication Date:
10 January 2013 (online)

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Abstract

Objective To introduce our device and procedure of electromagnetic navigation (EMN)-guided radiofrequency thermocoagulation (RFT) in patients with trigeminal neuralgia (TN).

Methods The EMN system mainly consists of an electromagnetic localizer, a thermoplastic facial mask with fiducial markers, and navigation software. A new surgical interface in which the foramen ovale (FO) and the trigeminal ganglion (TG) were integrated was used. It was applied in three patients with TN.

Results FO was successfully and accurately cannulated on the first attempt by using EMN guidance. During the follow-up period, pain did not reoccur, and appropriate trigeminal sensory paresthesia was elicited. There were no surgery-related complications.

Conclusion The EMN system is effective and highly accurate for RFT in patients with primary TN. Our modification of the registration system and surgical interface could make the RFT process more simple and accurate.

Keywords

electromagnetic navigation - radiofrequency thermocoagulation - thermoplastic facial mask - image fusion

This study is supported by National Science Foundation of China (No. 81100824) and Foundation of Shanghai Municipal Education Commission (No. 12YZ044).


 

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