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Depiction of the Trigeminal Nerve Deviated by a Tumor Lesion,Using Probabilistic Diffusion Tensor Tractography Go ISHIDA 1,2 , Makoto OISHI 1 , Masafumi FUKUDA 1 , Mitsuya SATO 2 , Yukihiko FUJII 1 1Department of Neurosurgery,Brain Research Institute,Niigata University 2Shinjinkai,Kitanihon Noshinkeigeka Hospital Keyword: cranial nerve , diffusion tensor imaging , presurgical evaluation , probabilistic tractography , trigeminal nerve pp.255-262
Published Date 2011/3/10
DOI https://doi.org/10.11477/mf.1436101373
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 We attempted presurgical visualization of the trigeminal nerve deviated by tumor compression using the probabilistic diffusion tractography (PDT) technique,which is used to analyze diffusion tensor imaging (DTI) data. We acquired DTI data of 3 patients with a tumor lesion around the trigeminal nerve (2 patients with trigeminal neurinomas and 1 with epidermoid) using the 3T magnetic resonance imaging system. The DTI data was analyzed by PDT using the Diffusion Toolbox,and the software of FMRIB (FDT; www.fmrib.ox.ac.uk/fsl). In all 3 patients,PDT allowed successful visualization of the trigeminal nerve which is further distal to the trigeminal ganglion,even when heavy T2-weighted imaging and conventional fiber-tracking analysis of the DTI data revealed only the cisternal segment of the nerves. Especially in 2 cases with the tumor mainly located in the Meckel's cave,the location of the nerve was determined only by PDT. All these findings obtained by PDT were concordant with the intraoperative observation of the actual nerves. In conclusion,PDT is a useful technique for visualization of the trigeminal nerve even when it is severely deviated by tumor compression,and this technique could have potential for evaluating other cranial nerves in surgical cases with a tumor in the skull base.


Copyright © 2011, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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